Hello all,
New here and still finding my way around ......
I'm currently in the process of renovating an old laborer's cottage built in the 1920-30's. There are two kinds of roofs. A pitched slated roof and an extension with a felted flat roof. The felt looks worn but joists are OK. My aim is to improve the insulation of the house overall, beginning with the flat roof. I am thinking of installing a 'Warm roof' insulation with VPL, 100-150mm of PIR thermal insulation or xtratherm, finished with either Paralon waterproofing surface or fibreglass. My question is: will this give be the best u-values for a roof of this kind? Has anyone had either type of insulation boards installed on their flat roof with good results? Did the roofer/builder provide you with a guarantee for both materials and work and for what duration?
Thanks for taking time to read. I look forward to all your replies.
V.
New here and still finding my way around ......
I'm currently in the process of renovating an old laborer's cottage built in the 1920-30's. There are two kinds of roofs. A pitched slated roof and an extension with a felted flat roof. The felt looks worn but joists are OK. My aim is to improve the insulation of the house overall, beginning with the flat roof. I am thinking of installing a 'Warm roof' insulation with VPL, 100-150mm of PIR thermal insulation or xtratherm, finished with either Paralon waterproofing surface or fibreglass. My question is: will this give be the best u-values for a roof of this kind? Has anyone had either type of insulation boards installed on their flat roof with good results? Did the roofer/builder provide you with a guarantee for both materials and work and for what duration?
Thanks for taking time to read. I look forward to all your replies.
V.