The first order of business to to strip the roof.
Retrofit flat roof insulation.
This better insulated and ventilated cavity will greatly reduce heat gain or loss through the roof.
I m wondering if there are any effective solutions that don t rely on closed cell foam.
The panel adds a remarkable amount of structure as well as insulation to the project.
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.
To produce a hot roof rigid insulation is fitted outside above the weatherproofing.
Next cut off the rafter tails so that the connection between roof and walls can be sealed with peel and stick membrane.
Remove the existing roofing membrane and inspect the roof for any deficiencies.
This benefit alone many times allows the metal retrofit roof system to pay for itself within 10 to 15 years.
I d like to add insulation to this truss space.
Different types of roofing insulation exist including blanket insulation blown insulation and rigid insulation.
We have done many roof retrofits with a structural insulated panel nail base panel.
This is then covered with a further weatherproofing layer.
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 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.
The use of metal retrofit roofs allows the flat roofed buildings to undergo a transformation into a sloped roof building.
With a flat roof however this becomes a major concern.
Make the necessary corrections to the roof framing and decking prior to beginning the new work.
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.
Concrete flat roof insulation though a very convenient form of construction even the development of better roofing technologies has not prevented flat roofing from continuing to be prone to traditional defects such as leakage component decay and in the more extreme cases structural failure.
Cold roof a very bad idea.
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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.
Dry in the roof with peel and stick membrane install two layers of insulation to the roof staggering the seams.
Retrofit an existing flat roof to improve thermal water and air control performance as follows.
See http solaralberta ca pdfs harold 20orr pdf we have done several roofs this way 1.
