Tips on screws 6x120 for NTR A sills?

[Anders_Nilsson]

I am going to assemble a floor structure made of 45x195 NTR A for my backyard cottage. I will lay garden tiles as a base along the sills, tar paper as moisture insulation, and then sills with floor joists between them as a frame. I plan to drill holes in the sills and drive screws into the floor joists.

The problem is that I’ve heard you need screws in corrosion class 4 for pressure-treated wood. For decking, there are plenty of stainless and galvanized screws, but in slightly larger dimensions, I only found stainless A2 from Spax at Bauhaus. Does anyone have tips for affordable (galvanized) screws in 6x120 or so?

/Anders

 

[huggan]

A2 and even C are sufficient if you do not live near the sea. And ESSES screws, which are C4, received top ratings in a test they conducted, so I recommend not blindly focusing on the labeling.

 

[Roundup]

I used Biltema's 6x120 the other week:
http://www.biltema.se/sv/Bygg/Faste...-galvaniserat/Traskruv-utomhus-100-st-870251/
Pre-drilled with 4 mm. Seemed solid and held well.

 

[Anders_Nilsson]

Thanks for the tip, Roundup! I actually checked Biltema but missed this one... Will be a definite purchase.

/Anders