Note the semi-detached house in the centre of the picture. The near half, with the square skylight, has a totally bare roof. No snow cover. It melted away. From heat loss.
Note the second half of the house, covered in snow. Better insulation, possibly better attic ventilation too.
Here is a view of the warehouse roof outside my third floor windows. First built as the Champagne streetcar barns, then called Vimy House, now it’s a secure document storage facility (know to us plebes as a mini-warehouse). The roof structure on the original building is 2×4’s or 2×6’s set on edge and packed together. Some sections had rot, when repaired Metcalfe Realty replaced them with trusses. The roofers put sheets of foam insulation on top before reroofing. Every repaired spot sticks out like a sore thumb, marked by a clear-melt zone. Cold storage anyone?
4 thoughts on “Insulation tells a tale …”
Are you saying the repair job has less insulation than the original?
Why yes. There is an insulation value in 4 or 6″ of solid wood. The replacement sections used wood trusses with plywood laid over the top. Both old and new sections got the layer of foam insulation laid on the exterior side of the roof sheathing, and then the roof membrane. So the difference between the melted and snow covered sections is the insulation value of 4 or 6″ of solid wood.
It’s my opinion they could have put insulation between the trusses, and saved on heating costs.
Perhaps the couple occupying the centre apartment have a steamier love life than the other tenants?
Comments are closed.