Retrofit Insulation Flat Roof

Concrete flat roof insulation prevention of condensation.

Retrofit insulation flat roof.

It needs to be furred out with something so the trim details will later match. Our insulation for existing flat roofs is ideal for extensions dormer roofs and includes a layer of either 25 50 75 or 100mm insulation board. The house has a flat epdm roof open chord roof trusses no ventilation and r 30 fiberglass batts with dubious installation quality wiring interrupts can lights swamp cooler ducts. Cold roof systems are highly inadvisable as insulation from the inside will inevitably lead to the formation of condensation.

These new roofs can be either low sloped less than 2 12 functional roofs or high pitched greater than 2 12 architectural roofs depending on the expectations of the building owner. Air seal wall cavities. Cold roof a very bad idea. A retrofit often provides an opportunity to add insulation between the old roof and the new metal panels or to use insulated metal panels for the retrofit.

I d like to add insulation to this truss space. A proper understanding of the link between thermal performance air leakage and condensation. How to retrofit a roof with insulation in my humble opinion i believe the only way to effectively and cost wise to solve the problem is to insulate from the top. Cover the roof with 6mil poly sealed at the wall line to the vb in the wall.

See http solaralberta ca pdfs harold 20orr pdf we have done several roofs this way 1. Make the necessary corrections to the roof framing and decking prior to beginning the new work. The type that is right for your flat roof insulation job depends upon the state of the roof expert opinion on the best type and your budget. Flat roof insulation by using our method of fitting insulation on the outside of the flat roof above the main decking boards but below the waterproofing layer we are able to protect the deck boards joists and ceiling from variations in the outside temperature.

With a flat roof however this becomes a major concern. But even though an unconditioned roof won t benefit from being covered in foam it will need to be detailed so that it aesthetically matches the rest of the roof retrofit work. The use of metal retrofit roofs allows the flat roofed buildings to undergo a transformation into a sloped roof building. This is then covered with a further weatherproofing layer.

Retrofit an existing flat roof to improve thermal water and air control performance as follows. I m wondering if there are any effective solutions that don t rely on closed cell foam. Types of flat roof. Remove the existing roofing membrane and inspect the roof for any deficiencies.

The waterproof covering is above the insulation and the vapour control layer is placed below the. Lowering that transmission through the roof can have a serious impact on heating and air conditioning energy expenses and lower the environmental impact of the facility as well. For larger roofs you may need to provide direct framing to framing contact.