Heidelberg/Hanson's postmix concrete is ideal for setting all types of posts. Simply pour down the hole and add water, it sets in 10 minutes. Used by the trade and DIYers. A relatively clean and easy solution compared to mixing ballast and cement.

The quantity required of course does depend on how big the hole is dug and its application. The bigger the hole then more postmix will be required. When fitting spurs to existing posts generally you would only dig down one side of the post and may only need 1 bag per spur. For all other types of post we would recommend 1.5 to 2 bags per full depth hole (550mm). The bags weigh approximately 20-22kg each.

Hanson/Heidelberg Muticem Cement 25kg Plastic bags

Formulated for use as mortar, concrete, render or screed. These bags can be stored outside due to the plastic packaging.

Suggested mixes:

Concrete (for post fitting) - 1 x cement and 4 x ballast (sand/20mm aggregates)

Mortar - 1 x cement and 4 x building sand

Render - 1 x cement and 5 x rendering/plastering sand

Screed - 1 x cement and 3.5 coarse concreting sand

Hanson/Heidelberg 20mm Ballast Trade bags

All in one sand and gravel for producing concrete. Cement sold separately. For post installation the advised ratio of ballast to cement (sold separately) is 4 ballast to 1 cement.

Bags are approximately 20-22Kg.

What is the difference between ballast/cement and postfix? Postfix is already mixed for convenience and only the addition of water is required. However Postfix is more expensive than mixing your own ballast/cement. For larger projects ballast/cement will work out much cheaper but it is more labour intensive and will result in more mess!

Ready mix postfix also available separately