Recent content by dsr30

the reason the first layer is nailed/spot bonded is to allow for movement and different rates of expansion and contraction between the decking and the felt,not such a problem now with high performance felts but cheaper felt forms raised ridges over time at the joints of the deck which then get...

you may be a little out of date :)

it looks untidy,but its just superficial....clean and prep surface and apply solar reflective paint or lay chippings....however the dip in the roof suggests that chipboard was used as decking and has started to degrade...have you been on the roof and tested by treading carefully on affected area

best practise is to nail the first layer.....the ripples may be caused by the felt being fixed in cold weather...usually cheap felt :( ...photos would help if poss