canada flag

PROUDLY CANADIAN COMPANY OWNED & OPERATED IN TORONTO SINCE 1989!

MENU

Sales & Support

416.364.3834 1.888.990.9234
CALL NOW

Windows | Doors Blog

12Jul

Wood vs Fiberglass Door For Entry Replacement

Wood vs Fiberglass Door For Entry Replacement

Replacing your front door is a big decision. Wood and fiberglass are two of the most popular materials for entry doors. Each has its own strengths in terms of style, durability, and maintenance. To help you choose the right one for your home, we have to go through a clear comparison.

Read More

How to Choose the Best Fireproof Insulation?

Choosing the best Fireproof Insulation begins with understanding what “fireproof” actually means. Most products resist ignition, slow flame spread, or protect structural elements for a rated period. Very few materials remain unaffected by extreme heat. That distinction matters.

A reliable choice depends on the building’s structure, room function, temperature exposure, moisture level, and required fire rating. Mineral wool may suit wall cavities because it tolerates high heat and supports sound control. Calcium silicate can perform well around industrial equipment, where rigid protection and dimensional stability matter. Intumescent systems expand when heated, but their performance depends heavily on correct thickness and surface preparation. No product works equally well everywhere.

Read the tested assembly, not only the product label. A wall, ceiling, pipe, or steel beam may require a specific combination of insulation, fasteners, sealants, and protective layers. Check certification documents from recognized testing organizations, installation instructions, smoke-development data, and maximum service temperatures. Local building requirements should also be reviewed with a qualified fire-safety professional.

Small details can decide performance. Gaps around electrical penetrations may let hot gases pass quickly. Damp insulation can lose effectiveness, while compressed material may create weak spots. Site conditions are often messier than product brochures suggest.

That deserves honest attention.

A practical selection process should compare tested fire ratings, durability, maintenance needs, environmental exposure, and total installation cost. The cheapest material may become expensive after repairs or inspection failures. Even experienced teams can overlook compatibility between coatings and insulation. Careful verification remains essential.

How to Choose the Best Fireproof Insulation?
Table of Contents [Hide]
1 What Fireproof Insulation Is and How It Works
2 How to Assess Fire Resistance Ratings and Safety Standards
3 Which Insulation Materials Best Fit Different Building Needs
4 How to Compare Thermal Performance, Moisture Resistance, and Durability
5 How to Choose, Install, and Maintain Fireproof Insulation Safely

What Fireproof Insulation Is and How It Works

How to Choose the Best Fireproof Insulation?

Fireproof insulation limits heat movement and delays flame spread. It does not make a building permanently fireproof. Mineral wool uses dense, noncombustible fibers that resist high temperatures. Fiberglass slows heat transfer, but its facing and installation can affect performance. Some boards release moisture or expand when heated. These reactions protect steel, walls, and service openings for longer.

The National Fire Protection Association reported about 1,388,500 fires in the United States during 2023. The same report recorded 3,670 civilian fire deaths and approximately 22.2 billion dollars in property damage. These figures show why material selection needs more than a product label. Check tested fire-resistance ratings, density, thickness, smoke development, and temperature limits. ASTM E119 or equivalent furnace testing evaluates complete wall, floor, or roof assemblies. Insulation alone cannot guarantee the assembly’s rating. That detail is easy to miss.

Tips: Match the insulation to the structure and hazard level. Seal joints, penetrations, and electrical openings carefully. Ask for independent test reports, installation instructions, and temperature data. Do not compress batts without checking the design. Compression can create gaps. I once treated “fireproof” as a simple material category; that was too careless. Performance depends on workmanship, moisture control, and surrounding layers. A qualified fire-safety professional should review unusual applications.

How to Choose the Best Fireproof Insulation? - What Fireproof Insulation Is and How It Works

Typical properties of commonly used fire-resistant insulation materials. Actual performance depends on product density, thickness, installation quality, and the tested building assembly.
Insulation Type Primary Composition Typical Thermal Resistance Reaction to Fire Approximate Service Temperature Moisture Behavior Best-Fit Applications
Mineral Wool Rock or glass mineral fibers formed into batts, rolls, or rigid boards Approximately R-3.0 to R-4.3 per inch Generally noncombustible; many products can withstand temperatures above 1,000°C, depending on binder and product design Often suitable for high-temperature applications; verify the product's tested limit Does not readily absorb liquid water, but prolonged wetting can reduce thermal performance Fire-rated walls, floors, roofs, façades, industrial equipment, and acoustic assemblies
Fiberglass Fine glass fibers bonded into flexible batts, rolls, or loose-fill insulation Approximately R-2.2 to R-4.3 per inch Glass fibers are noncombustible, but facings, binders, and adjacent materials may burn Varies by product; the facing and binder usually determine the practical limit Fibers do not readily absorb water, although wet insulation loses effectiveness until dried or replaced Framed walls, attics, ceilings, and areas where cost-effective thermal control is needed
Cellulose Recycled paper fiber treated with fire-retardant additives Approximately R-3.2 to R-3.8 per inch Fire-retardant treated, but combustible; it should not be described as noncombustible Not intended for direct exposure to high heat or flame Can absorb moisture; requires appropriate vapor, air, and water control Dense-packed wall cavities, attics, and retrofit projects requiring good air-sealing potential
Expanded or Extruded Polystyrene Closed-cell plastic foam, commonly supplied as rigid boards Approximately R-3.6 to R-5.0 per inch Combustible; typically requires a thermal barrier or approved protective assembly when used inside buildings Commonly limited to roughly 74°C; check the exact product specification Low water absorption compared with fibrous insulation, especially for closed-cell boards Below-grade walls, foundations, slabs, and exterior continuous insulation with required protection
Polyisocyanurate Rigid closed-cell thermoset plastic foam, often faced with foil or coated coverings Approximately R-5.6 to R-8.0 per inch, with performance affected by temperature and aging Combustible; fire behavior depends on facers, thickness, and the complete tested assembly Often rated for temperatures around 93°C to 121°C; confirm the product limit Generally low water absorption, but joints and penetrations must be properly sealed Roofing, exterior walls, and projects requiring high thermal resistance in limited thickness
Calcium Silicate Mineral-based board or pipe insulation made primarily from calcium silicate materials Approximately R-2.0 to R-3.0 per inch Noncombustible and designed for high-temperature service Many products are designed for approximately 650°C to 1,000°C service Can take on moisture; drying may be needed to restore design performance Industrial piping, boilers, furnaces, and high-temperature equipment
Selection note: “Fireproof” is commonly used in marketing, but no insulation makes an entire building fireproof. Choose a material according to its tested fire classification, required fire-resistance rating, thermal performance, moisture exposure, installation method, and the code requirements for the complete wall, floor, roof, or equipment assembly. R-values are approximate and should be confirmed using the current product literature and applicable test standards.

How to Assess Fire Resistance Ratings and Safety Standards

How to Choose the Best Fireproof Insulation?

How to Assess Fire Resistance Ratings and Safety Standards

Fire resistance begins with the tested assembly, not the insulation alone. Check whether the rating applies to walls, ceilings, roofs, or service penetrations. A two-hour rating usually means the complete system resisted fire for two hours under controlled testing. It does not guarantee identical performance on every project.

Read the certificate. Details matter. Confirm the tested thickness, density, fixings, joints, and installation method. Standards such as ASTM E119, ISO 834, and EN 13501-2 assess different performance areas. Some measure fire resistance, while others classify reaction to fire, smoke, or burning droplets. These terms are not interchangeable. I have seen specifications use “fireproof” too loosely. That wording can hide important limits.

Inspect weak points before choosing materials. Cable trays, pipes, doors, and wall openings often reduce protection when poorly sealed. Ask for independent test reports, certification scope, and production quality records. Verify that the documentation matches the construction site and local building code. A rating from another country may not satisfy local approval requirements. Do not guess. Consult a qualified fire engineer when the design is unusual or heavily occupied. Even experienced teams can miss a small gap behind a service panel.

Which Insulation Materials Best Fit Different Building Needs

How to Choose the Best Fireproof Insulation?

Which Insulation Materials Best Fit Different Building Needs

Choosing fire-resistant insulation starts with the building’s actual conditions, not a product label. No insulation makes a structure completely fireproof. The full wall, ceiling, and floor assembly must meet local fire-testing requirements.

Mineral wool suits walls around furnaces, kitchens, and service shafts. It tolerates high temperatures and can also reduce airborne noise. Fiberglass works well in standard wall cavities and roof spaces. It is lightweight, widely available, and easier to cut around pipes. However, gaps can reduce its performance. Installation quality matters greatly.

Rigid foam insulation can provide strong thermal resistance where space is limited. It needs careful protection because many foam products require a tested covering. Cellulose insulation may fit attics when recycled fiber and moisture control are priorities. Its fire-retardant treatment must remain effective and properly installed. Wet insulation performs poorly.

Think about moisture, access, thickness, ventilation, and future repairs. A coastal building may need better moisture management than a dry inland home. A workshop may need heat resistance near equipment. Ask for testing documents, installation instructions, and the required fire rating. A qualified building professional should review the complete assembly.

Small details matter. Seal penetrations correctly. Protect electrical components. I have seen good insulation fail because contractors rushed around door frames. That mistake is easy to underestimate. Recheck the plan before installation.

How to Choose the Best Fireproof Insulation?

Which insulation materials best fit different building needs?

Best for fire resistance
Mineral wool and cellular glass are generally non-combustible when tested as complete products, making them suitable for façades, fire compartments and high-rise applications.
Best for thermal efficiency
PIR typically provides the lowest thermal conductivity in this comparison, allowing thinner insulation layers. Its fire performance depends on the specific product and assembly.
How to read the chart
Lower thermal conductivity means better insulating performance. Final selection should also consider fire classification, moisture, acoustics, structural requirements and local building codes.

Values shown are representative midpoints of commonly published thermal-conductivity ranges at approximately 10°C; actual performance varies by product density, thickness, moisture and installation quality.

How to Compare Thermal Performance, Moisture Resistance, and Durability

How to Choose the Best Fireproof Insulation?

Choosing fireproof insulation starts with thermal performance, not just a fire-rating label. Check the declared thermal conductivity and the tested R-value at the expected temperature. A lower conductivity usually means better heat control. However, laboratory figures can change after poor installation. Gaps around pipes, compressed sections, and unsealed joints create real heat-loss paths. I have seen a well-rated assembly perform poorly because the insulation was cut too short.

Moisture resistance deserves equal attention. Water can reduce thermal efficiency and encourage corrosion or biological growth near surrounding materials. Review the product’s water absorption, vapor permeability, and drying behavior. A vapor-tight layer may help in one wall design but trap moisture in another.

Local climate matters. So does indoor humidity. For basements, roofs, and exterior walls, examine drainage details rather than relying on the insulation alone. Small leaks become expensive problems.

Durability should be judged over the building’s service life. Ask whether the material resists settling, shrinkage, pests, vibration, and repeated temperature changes. Request independent test reports and installation guidance from qualified professionals. Check that fire performance applies to the complete assembly, including membranes, fasteners, and finishes. That detail is often missed. I would also inspect a sample area after installation, because visual quality can reveal hidden compression or open seams.

No material is perfect. The safest choice balances tested fire behavior, stable insulation value, moisture control, and workmanship.

How to Choose, Install, and Maintain Fireproof Insulation Safely

How to Choose the Best Fireproof Insulation?

Choosing fireproof insulation starts with the building’s risks, not just its advertised fire rating. Check the required resistance time, temperature range, moisture exposure, and installation space. Mineral wool, calcium silicate, and fire-resistant boards behave differently under heat. Confirm test reports, safety data, and local building requirements with a qualified professional. A product may resist flames yet perform poorly if gaps remain around pipes or electrical openings.

Safe installation demands accurate measurements and careful sealing. Wear gloves, eye protection, and a suitable respirator when fibers or dust may be released. Keep insulation away from recessed lights, flues, and heat-producing equipment unless the system is approved for that location. Follow the tested assembly exactly. Small changes in thickness or fasteners can reduce protection. I have seen neat-looking work fail because one hidden joint was left open. That detail is easy to miss.

Tips:

Inspect the surface before installation. Mark every penetration. Seal joints with compatible, tested materials. Do not compress insulation unless instructions allow it. After installation, check for moisture, sagging, damaged edges, and new gaps twice a year. Keep records and photograph concealed areas before closing walls. If anything seems uncertain, stop and ask a certified inspector. Fire safety is not the place for hopeful guesses.

Article Source:

Read Our 5-Star Testimonials

quotes

Amazing service and quality products. Installation was on time and on budget. Our windows look awesome. Edan gave us his full attention from the first call and every step of the way after. Highly recommend.

Adam Rivers Reviewer Image

Adam Rivers

quotes

New windows and door for basement and new metal/glass back door for main house - even through my indecisiveness and the covid-19 challenges Ayal and his installers were patient with me and I am very happy with the look and quality of the install.

homestars logo image
Geraint Reviewer Image

Geraint

quotes

It was a pleasure dealing with Jack and all Delco's stuff. The windows arrived on the date for which were promised. The quality of the service, product and workmanship were excellent. I would gladly recommend Delco to anyone need Windows and Doors

Ruven Y. Reviewer Image

Ruven Y.

quotes

We're so happy with our new front door. Very high quality finish, beautiful window. Installation was impeccable and done very quickly. Hinge and 3-point lock mechanism fit perfectly and feel very solid. Very attentive customer service. Door really ups our curb appeal!

homestars logo image
Jim Bird Reviewer Image

Jim Bird

quotes

I just had my front door replaced and cannot say enough good things about this company. From start to finish their professionalism is outstanding, and the workmanship excellent. Would highly recommend

Maureen Fuller Reviewer Image

Maureen Fuller

quotes

Delco supplies my windows and doors for renovations throughout the GTA. Edan and his staff are the best. Well priced quality products and personalized service. Highly recommended.

homestars logo image
Noah Klar Reviewer Image

Noah Klar

quotes

We have 3 sliding doors and a double front door replaced. All work was done professionally but well qualified craftsman. Watching them work it was clear they new what they were doing and work is first class.

homestars logo image
R. Pierce Reviewer Image

R. Pierce

quotes

We used Delco to replace our windows and patio door and door glass inserts. We are very happy with the quality of the windows and patio door and were very impressed with the installers as well who were very professional and clean. Thank you Nasho and George for your hard work and patience. Also, a big thank you to Ayal who always returned my calls and answered all my questions.

homestars logo image
Sandra Reviewer Image

Sandra

quotes

Delco provided all the exterior doors for our new home build. Ayal was great and the company is very customer service oriented. The doors look beautiful, the hardware is high end and the install went very well. Overall we are very happy with the product and service.

homestars logo image
Sarah Reviewer Image

Sarah

quotes

Ayal and Edan were great to work with. They provided extensive product knowledge and had a great selection in their showroom. The windows and doors changed the whole look of the house and gave a much needed modern yet classic update. Great quality and workmanship! Thank you!

Stephanie Lannaci Reviewer Image

Stephanie Lannaci

quotes

Both my wife and I could not have been happier with the product and service displayed by the owner and the installers. They had kept true to there word and the timelines. The process was catered to our schedule and was seamless.

Fabrizio Macieri Reviewer Image

Fabrizio Macieri

quotes

Had a great experience with Delco. They were professional and did a great job on time.

Joey Oliveira Reviewer Image

Joey Oliveira

quotes

Our experience with Delco Doors has been very good. We needed to replace out front door. Our old 6 feet Steel doors were removed and replaced with Delco 8 feet Fiberglass Doors. The installation went very smoothly, and the guys made sure that everything was fitting squarely and tight. They cleaned up after they were done and were very pleasant to work with. Would highly recommend them.

Angie Gandhi Reviewer Image

Angie Gandhi

quotes

A fantastic company to deal with from start to finish. They were professional, courteous and the project was completed in the timeframe agreed upon. Would highly recommend Delco.

homestars logo image
Linda Reviewer Image

Linda

quotes

I would recommend Delco Windows and Doors without any hesitation. The quality of the products is very good, the installation exceeded my expectations and the responsiveness and punctuality is impressive.

homestars logo image
Serban Dinca Reviewer Image

Serban Dinca

quotes

Very good and timely service. A pleasure to work with Edan Next time I need windows and doors I will definitely call them again

Adrian Nema Reviewer Image

Adrian Nema

quotes

Recently ordered a custom window from Delco. We are extremely happy with the level of customer service - Elyse went out of her way to notify us when the window came in and came in to work on her day off so we could come pick up the window. If we need another window we will definitely come back to Delco!

Jonathon & Sheri Mcintosh Reviewer Image

Jonathon & Sheri Mcintosh

quotes

I would highly recommend this company, the final product was beyond my expectations, My new front door makes my house standout so happy thank you Delco Windows and doors. I will definitely use Delco Windows and doors again in the future thanks to Edan and the installers

Maria Reviewer Image

Maria

quotes

Existing door replacement is a delicate project. I am very satisfied with job well done by Ayal Jack and his installer. Highly professional team, they know their business well, easy to deal with, very accommodating. He guided us step by step to select the best fit for our purpose.

homestars logo image
Alfy Reviewer Image

Alfy

quotes

I would highly recommend this company. They were very easy to deal with, accommodating and professional. The final product was beyond my expectations. The products completely transformed the front of my house and for sure increased its value and curb appeal. Thanks!

homestars logo image
Mi Reviewer Image

Mi

quotes

Happy experience from start to finish. Thank you to Edan for going out of his way to meet us late one evening and his helpful consultation in the showroom especially thank you to the extremely professional, clean and friendly crew of installers. Everything was as promised, the men arrived on time, their work was immaculate and complete, their craftsmanship beyond reproach.

Esther Tobin Reviewer Image

Esther Tobin

REQUEST A QUOTE

We’ll Come To You!

GET A FREE QUOTE

Quality New Windows & Doors. Competitively Priced!

Christine R.

Please, enter a valid value