You want the curve to face down wherever possible, so it does not retain water and increase the potential for slippery algae, moss and rot. This diagram shows how timber shrinks differentially depending on the grain direction and the orientation of the board within the log it was cut from. https://media1.britannica.com/eb-media/19/67719-004-A5F7ECED.jpg

Hi there, I am building a deck which will be level with the ground and enclosed on all sides. I understand this is a big no-no, but it's the design we have envisioned. I'm just wondering what I can do to increase ventilation? The deck will have 300mm clearance from the ground. We are planning on doing 140 x 32mm pine decking. For spacing between boards we were looking at 6-10mm spacing. We will slope the ground towards a drain and connect it to the storm water drain. The ground is a combination of sand and dirt, then 100mm below that is clay. Would we have problems with ventilation? Should we lay down some polythene so all the water will flow into the drain? Is there anything else we could do to increase ventilation? Thank you

Looking for a balustrade design that affect the view in a minimal way. Not interested in glass. But horizontally fixed stainless steel wire. Ultra.tech is the brand.

Hi. I have a concrete patio 85m2 fairly good condition and mostly under suffet. Slopping away from house My understanding I cannot put joists directly to concrete needs 12mm clearance min for air and water run off, I was going to use a dampcourse underlay and set joist perpendicular to houseany ideas nurajacks are pricey and there calculation I needed 300 or so, thanks in advance