flat roof

Hi all... hope you can help, I'm finding conflicting information online! I'm about to put a GRP warm flat roof on an outbuilding, I'm using 100mm PIR foil backed insulation and was wondering do I need a deck between the joists and insulation or only one above the insulation (the joists are at...

Hi, we are in the process of buying a 1960s Bungalow that has a 6% pitch flat roof. According to the survey, it recommends replacing the roof some time soon. I've enquired about replacing this with Single Ply Sarnafil but have been quoted £25k.Having done a bit of online research I came across...

We had a new 45m2 warm construction flat fibreglass roof installed in October. It makes intermittent loud banging and creaking noises. It is worse during the morning and evenings when the sun rises/sets and the temperature rises/falls. The roof is south facing. I have found numerous old threads...

Hi all I've bought some celotex insulation to put up on the ceiling in my garage but I'm not quite sure on the ventilation. I want to place the whole sheets underneath the joists to seal the roof structure from the garage room. This is a cold roof configuration I understand. I'm not living in...

Hi Sorry for the vague title, I have rain somehow get through and starts to seep down the plaster by my living room window My property is a flat roof terraced, it has hardly any brickwork because it has one whole length of wall between two columns of brick that separate me and my neighbours...

Hi all, I've just done my first flat roof and I've left noggins to pick up the Fascia's where the joists run parallel to the wall. The joists overhang at the front also for the fascia. The brickwork is two course higher on the outside so I could have a smaller fascia board by the time the warm...

Hi all, I'm putting 10 x 2 joists in for a flat roof. The span is about 3m from wall plate into steel and then the same out of the other side of the steel to the fascia. The steel section is 254 tall so I've gone for 10x 2 to give a flat roof and a flush ceiling. Can anyone advise on the...

hi all, just wondering if anyone can help with a little roof issue a workmate has, he's had an extension that has an almost flat roof(slight pitch) which butts up against the pitched roof of the garage, currently theres a 200mm brick upstand to the rear of said flat roof, the tiles from the...

Hi all, I’m having a flat roof on an extension I am building and the area is approximately 8m x 6m - 48m2 (not taking into account the skylights) please can anyone recommend a roofing system that’s suitable for large areas such as this. It will be visible from the upstairs windows but I...

We've recently had a loft conversion done, with a warm deck roof. Inside the loft the ceiling feels cold. The builder said that's normal. A different roofer has come round and said the flat roof has definitely not been done correctly. Some pics are attached - I'd love to know your thoughts...

Hi all, I'm currently self building a single storey extension and I'm wondering wether I need a timber wall plate or not. Can I just run the timbers over the blockwork and brick and use restraint straps as pictured? My timbers are running the steels to give a flat ceiling and in years to come...

Hi there, This is my first post on the forum, nice to meet you all! I have just bought my first house, apart from all the sockets falling off the walls it all seemed okay until Monday. It rained overnight and I woke up to a large damp patch around my bedroom window. It hasn't rained since...

As my builder buggered off without putting in the soffit vents I had BC out last week and lo and behold it's changed and we need cross ventilation on the flat roof of my extension and we're not able to just put in the soffit vents on the front overhang, but rather being asked to do it from side...

Hi all, I am looking for advice on the best way to repair a fibreglass roof. I have moved to a place with a single story extension with a fibreglass roof. I was aware that there has been some damp on the ceiling side when I bought the house, and am now looking to fix it. I have never worked on a...

Hi DIYnot, Wonder if I could call on your expertise. I have 1973 house with flatroof with asphalt on tonge-in-groove construction. Under this is an 11" high cavity with no ventilation between rafters. There is 20mm polystyrene insulation resting on plasterboard with the obligatory artex finish...

I have a flat roof in good order needing a bit of TLC to improve the weathered areas and extend the life a bit. I have been quite impressed with Wickes Acrylic (with fibres), so was thinking about giving the whole ~ 20 sq.m roof a coat of something similar. The products I have looked at range in...

Our flat roof was done about 4 years ago and we noticed a "house shaking" noise about a month ago. It happened about 2 or 3 times, but we had no idea what it was. After being away for a few days, we recently came back to notice that the corner of the flat roof had peeled and rolled back on...

Hi We recently purchased a detached property and it has a flat roofed utility that backs onto the garage. Its not a massive area but my father in law painted the ceiling in that room and poked a hole through it about the size of a tennis ball very easily. It would seem that area is rotten...

Hi, My flat has a roof terrace, that doubles as the ground floor flats roof. The roof doesn't appear to be leaking into the downstairs, or at least there has been no complaints that it has. My flat is located in a block of 4, the maintenance of the flat roof is supposed to be split 4 ways...

Hi all, Im nearly ready to lay down 6x6m warm-deck flat roof single story with 150mm insulation sanwiched between 18mm OSB3 T&G sheets. EPDM on top. Having read about wind uplifts and need to secure things down, can I ask for some advice on fastening down 150mm/OSB sandwich please. Is it...