Currently the built up asphalt roof is installed over homasote or something similar and a roof deck made of wood planks.
Insulating low pitch attic.
In warm climates zones 1 through 4 low density open cell spray foam insulation is the typical choice since it is vapor permeable and will allow drying of the exterior sheathing and roof framing if they happen to get wet via diffusion into the interior of the building.
Plan to pull up the flooring and layer new insulation on top of the old.
If the roof is vented the ceiling must be air sealed to prevent moisture laden air from reaching the attic.
Stage 2 of insulating a low slope roof.
He plans on replacing the low slope built up roof with an epdm membrane and the question is how to insulate it correctly.
As this requires fitting insulation above the rafters the roof covering will have to be removed in order to fit the insulation.
It is made from cellular plastic or fibrous materials and pressed into boards.
Although some builders insulate a low slope roof with the same techniques used for a house with a big attic they should be using a different approach.
Rigid board insulation is the most common type of insulation used in low slope commercial roofing.
To create a warm pitched roof insulation such as kingspan kooltherm k7 pitched roof board should be fitted between and over the rafters.
Because the simplest and cheapest way to insulate an attic is to add material to the floor.
Gaps in the framing need to be sealed any holes from electrical wiring must be filled and so on.
Insulate the walls carefully and effectively so that you don t wind up with further problems down the road.
Eric dymond lives in a 1920s baltimore row house that needs a new roof.
There are lots of ways to insulate a low slope roof and most of them are wrong.
Insulfoam sp is specifically designed for low sloped roof applications that employ mechanically fastened or ballasted tpo pvc and epdm as well as low sloped built up modified bitumen and fully adhered single ply roofs that incorporate cover boards or slip sheets.