Deck repairs rain and floods

With the country now under a foot of water we have probably chosen the worst weather to start working on the decks.

However, the rain does highlight how rain runs of the deck where it pools and where there are weak spots.

Rain diversion

After nights of research on google looking at roofing supplies and rain harvesting I have come up with an idea to seal the roof using roofers flashing around the edges of the deck and a rubber roofing paint/sealer Isoflex and simple diversion with strips of one by one sealed with a wood hardener sealed with the isoflex.

http://www.screwfix.com/p/ronseal-wet-rot-wood-hardener-500ml/63540?cm_sp=Search-_-SearchRec-_-Area1&_requestid=361281

http://www.screwfix.com/p/isoflex-liquid-rubber-black-4-25ltr/29518