how to prevent ice from forming on edge of roof,slow slope cathedrall ceilling?

Question

house built 1965 10in joist 44ft span,4in paper bag insulation 4in air space ,added 4in ins to half of home by adding drop ceilling to hottess rooms ,furnase ,bathrooms,etc hopping this would correct the problem but still have same ice build up problem.perhaps home builder experience could help?

Answer 1

time for a knew roof.if you ask me.

Answer 2

Adding a drop down ceiling will help keeping heating and cooling cost down.
But you will need to be sure that you have air space circulating thru by way of vents.
Ice will always build up at the edge of roof lines edge. When you do not have enough pitch on a roof and the snow or rain water run off is slow then at night temperatures fall to freezing.
Then water will turns to ice. You can see this on many home thru-out the midwest and in some parts of the eastern and northern areas. Place gutters in these areas if you do not have these. The ice will melt as temputures rise and the water will fall into the gutters. If you want to eleminate the ice build up then a thermal line would be needed. But would the cost be worth it?

Answer 3

I would say you have no air space along edge of house and roof, You should have air vents under eves of house, and insulation should not go completely to top of roof to allow the air from these vents to go above the insulation therefore keeping the entire roof the same temp. Your roof is melting the snow but at the area above these vents are at freezing causing the problem.

Answer 4

ice melt coils on roof