I've got a couple of DIY issues I'd like to tackle.
Firstly, I have a concrete block-built garden shed which is letting in wate r. Seems to be coming in through the bottom course of blocks which is above the damp course. 6 months ago I built a new decking and screwed a length o f 4x2 to the outside of the shed as a support, and the trouble seems to hav e started about then. Every time it rains I'm now having to sweep out 2-3 m m of water. The screws holding the 4x2 to the shed have not penetrated thro ugh to the interior.
I am wondering if the solution is to apply some kind of mega-sealant to the inside of the blocks? I really have no idea how to proceed with this probl em. Looking for advice. The roof is watertight, and the interior walls feel dry, apart from the bottom half of the bottom course of blocks in the back right hand corner. I do not have any air-bricks or other form of ventilati on. I cannot move the decking as it is now cemented into place.
Pictures here: 1. Exterior of shed showing position of decking. http://i760.photobucket.com/albums/xx243/jonboyp1976/Shed/150409-DSC_0053.j pg
2. Close-up of inside showing interior surface of blocks which are wet, and the position of the damp course. http://i760.photobucket.com/albums/xx243/jonboyp1976/Shed/150409-DSC_0052.j pg
3. Picture of water pooled in the shed, and the bottom course of blocks app ear discoloured compared to the rest. http://i760.photobucket.com/albums/xx243/jonboyp1976/Shed/150409-DSC_0051.j pg
I'd appreciate any pointers on how to proceed, products to try etc.
Thanks and regards. Jon