roof beams

Hi Hope someone may be able to help with the following query. I was in my loft earlier (timber frame house that is 5 yrs old) and noticed wet patches surrounding several of the nails that on the beam to along the length of my loft. Here are approximately 15 screws/nails and around 8 screws had...

Hi, I'm new here and completely inexperienced with roofing. I want to build a cold, slightly pitched flat roof over my garage, which is 6.5m x 5.4m. The pitch will run along the 6.5m side, and the joists will span the 5.4m width. I'm planning to use C24 47x200mm or 8x2 joists (5.4m long) at...

Hello, I’ve noticed these white marks on the roof beams in the loft and am very worried it could be something serious. Please could someone tell me what it is and if it’s possible to remove? Many thanks.