Are H5 laminated posts certified for in ground use?

Yes. Prolam is leading the way with H5 laminated structural in-ground posts.

Codemarked for NZBC Compliance in B1 and B2, it means you can use Prolam in-ground posts with more confidence than ever.

 

Do I have to seal the portion of post that goes in ground?

It’s recommended to coat the in-ground portion of Prolam posts to prevent moisture ingress. Use the same paint or stain as the above-ground section for consistent protection of your structural timber.

Refer to the Prolam Coating Requirements for further details.

What do I have to seal the in-ground portion with?

Typically the same sealer is used.

Can I use H5 posts in-ground for structural use?

Yes. Prolam posts are 'Codemark' certified for inground structural use.

How much does a Prolam post weigh?

The weight of Prolam PL8 & PL12 H5 post is around 550 kg's per cube. For example, the weight of a 135x135 3.6m is around 36 kg. E.g. 0.135 x 0.135 x 3.6 x 550 = 36.09 kg