Shed base and floor questions

[Jabz]

First time post, so go easy on me 

I am going to build a shed from scratch on a concrete flag base.

If I build the base out of tantalised 4x2 with a blackjack coating on the bottom and sides, would I be ok to make the rest of the shed framework out of untreated 3x2? I plan on treating it afterwards with stain and sealant.

Also, what would be the most cost effective method and material for the floor panels?

[yberllan]

You can buy bitumen treated board, which is very strong. Or another option would be Insulated Panel as a floor. 

[markc]

On 09/07/2022 at 15:52, Jabz said:

First time post, so go easy on me 

I am going to build a shed from scratch on a concrete flag base.

If I build the base out of tantalised 4x2 with a blackjack coating on the bottom and sides, would I be ok to make the rest of the shed framework out of untreated 3x2? I plan on treating it afterwards with stain and sealant.

Also, what would be the most cost effective method and material for the floor panels?

You didn’t give any shed dimensions but depending on spans etc. 4x2 can work. Tanalised  (I quite like the tantalised idea lol) is good. Better if on small pier type supports to minimise and standing water around the timber.

DPM is good to separate the support piers and underside of timber.

floor is really down to use of the shed, budget and build of structure underneath so more info would help.

Edited July 18, 2022 by markc