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    Drywall screw spacing for 24”/600mm centres (soundproofing)

    I am building a stud wall for optimum soundproofing. I have the first layer of 5/8” (15mm) drywall (strong adhesive on the 24” / 600mm centre studs then minimal screws to hold it onto the adhesive as second layer will be fully screwed through first). I will be applying green glue to the second...
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    Best outdoor sealant for salty sea air (that lasts) ?

    I need to seal my balcony from the outside using scaffolding to reach it. Its a 5th floor seaside balcony https://imgur.com/a/uaZNU3O (pvc windows, painted concrete, brick) and when the storms come off the sea the wind driven rain absolutely lashes the windows and balcony and it gets in and we...
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