Can you help Sheddie Danny figure out how many screws to build his shed?

New user Danny on our shed forum just asked this.

I am building a 1.8m x 2.4m shed on a concrete base. I am using a timber frame made from 100mm x 50mm at 500mm centres. I am using shiplap timber which is 12mm thick and 125mm width and was wondering how many screws should I use when attaching the shiplap to the timbers. Should i also have a timber gravel board around the bottom of the shed, so its eaiser to replace if the bottom board rots .My base is sitting about 80mm above the ground and Ill have guttering to take the water away. thanks in advance

If you can help him then post a comment here or on the forum.

weather or not
Creative Commons License photo credit: meonomous

By Andrew Wilcox

I love sheds Founder & judge of Shed of the year - Wilco writes mainly about sheds. About the blog Enter your shed into #shedoftheyear