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What Are The Best Flat Roof Insulation Products?

Flat roof insulation is a vital part of any building, as it helps to keep the interior warm in the winter and cool in the summer. It comes in board form and usually has a layer of PIR, polystyrene, or mineral wool between two layers of paper or foil.

There are several flat roof insulation products on the market, but not all of them offer the same effectiveness. The best flat roof insulation products are those that are made from high-quality materials and installed by qualified professionals.

Not all flat roof insulation products are created equal. When choosing a flat roof insulation product, it is important to consider its R-value, thermal conductivity, permeability, and resistance to moisture and rot.

Here are some of the best flat roof insulation products on the market:

Kingspan Thermaroof

Kinsgpan Thermaroof TR24, TR26 and TR27 flat roof insulation is a high-performance product range that is made from rigid polyisocyanurate (PIR) foam. It has a low thermal conductivity and high fire rating.

This makes it an ideal choice for flat roofs, as it can withstand high temperatures and is fire resistant. It is also moisture-resistant and has a low water absorption rate.

Each product is suitable for a different type of waterproofing (torch-on felt, single ply membrane – fully-bonded and mechanically fixed). You can find more information on the individual product pages.

EcoTherm Eco-Deck

EcoTherm Eco-Deck flat roof insulation is also made from rigid polyisocyanurate (PIR) foam. Like Kingspan, it has a low thermal conductivity and is water-resistant.

Eco-Deck consists of a 2400mm x 1200mm EcoTherm Insulation Board bonded to a 6mm Plywood Sheet. This saves time as both insulation and plywood can be installed together. The most popular thicknesses are 56mm, 96mm and 126mm.

The product is also fire retardant and has a high fire rating. This makes it an ideal choice for flat roofs, as it can withstand high temperatures.

Eco-Therm Eco-Torch

Eco-Therm Eco-Torch flat roof insulation is a high-performing product that is also made from rigid polyisocyanurate (PIR) foam. It has a low thermal conductivity and high moisture resistance.

It is designed to be installed with torch-on felt (hence the name), and has a glass tissue face on one side and bitumenised glass tissue with polypropylene fleece on the other.

It is also flame retardant and has a Class 1 fire rating. This makes it an ideal choice for flat roofs, as it can withstand high temperatures and is fire resistant.

Recticel Powerdeck

Recticel Powerdeck F flat roof insulation is made from rigid polyisocyanurate (PIR) foam. It has a low thermal conductivity and is fire retardant. It has a mineral coated glass face, and is compatible with full bonded single ply waterproofing systems.

It is also water-resistant and has a high compressive strength. This makes it an ideal choice for flat roofs, as it can withstand high temperatures and is fire resistant.

Rockwool HARDROCK

Rockwool HARDROCK flat roof insulation is a high-performance product that is made from mineral wool.

It has a low thermal conductivity and is rated A1 non-combustible, which means that it does not burn. It is also water repellent and has a high compressive strength.

When choosing a flat roof insulation product, it is important to consider its R-value, permeability, and resistance to moisture and rot. The best flat roof insulation products are those that are made from high-quality materials and installed by qualified professionals.

Materials Market can advise on the range we sell from Kingspan, EcoTherm, and Recticel.

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