Replacement Flat Roof Insulation

Some types of flat roofing material like metal also require insulation to help deaden the sound.

Replacement flat roof insulation.

What is the best flat roof or roof material for flat roof replacement. It has 120 units and 5 floors. This only applies to flat roofs over habitable parts of your home so it excludes garages sheds some porches and most door canopies. Since 2005 if you replace 25 or more of your roof covering felt then you need to ensure that the entire flat roof has enough insulation to satisfy current building regulations.

The current building regulations with respect to u values for flat roof insulation was updated in 2010 following on from the 2006 implemented changes to building regulations approved document l conservation of fuel and power. Metal specifically aluminum is known for its durability. Best flat roofing materials flat roofs compared. Many homeowners also prefer to use a type of insulation to help improve energy usage on the roof.

This is a question i get asked a lot and to be honest there isn t a right or wrong answer but there is sometimes a type of flat roof that would suit a flat roof of a particular size shape detail level or budget. This could mean flat roofs may not raise the same red flags they used to. Air cells are trapped within the perlite which provides the insulation for your flat roof. Rubber roofing commonly comes in a roll or sheet often referred to as a membrane.

Metal is one of the most popular materials used for flat roof replacement. However depending on the severity of the damage and the type of material installed repairing a flat roof can cost as much as 600 800. Generally a rigid insulation board should be used as part of the roofing construction and may be applied over or under the roofing deck. On average you ll spend about 7 500 for 1 500 square feet with a range of 6 000 to 18 000 due to the complexity of the installation type and thickness of insulation roof pitch location accessibility and old roof removal costs can exceed 24 000.

The insulation board is treated with an asphalt coating to limit asphalt absorption into the insulation. Pvc membranes are easy to maintain and repair. A typical flat roof repair costs at least 350 400 and involves locating sources of leaks and patching the seams or holes. I have been told once the building needs a new flat roof that we must add 5 of insulation now.

The current target u value for new or replacement flat roofs should be 0 18w m k. I live in a 55 condo self managed. Like wood fibre it has a thermal resistance value of 2 78. Some observers suggest it s harder to replace a flat roof than a traditional pitched shingle roof because of the labor required to remove its layers especially on older flat roofs.

Perlite insulation is composed of perlite combined with organic fibres and binders. But now flat roofs often are constructed with fewer layers because of improved waterproofing technology. Plus it has the added advantage of reflecting heat from the sun which keeps energy costs down.