Five smaller cold frames have already had their gravel bases replaced with concrete since the 20th August when the project begun. One of the two large frames had it's old base dug out last week in preparation for today's concreting.
First the remains of a small concrete ledge is chipped away and the rubble left in the base. Ballast and cement are then mixed to a smooth consistency and poured into a wheelbarrow.
Unlike the other cold frames, a wooden frame is fixed in place for the lids so the concrete has to be poured very carefully between each gap.
Once filled to the required depth for the base, the surface is levelled and the concrete allowed to set overnight. With one large frame left, the project continues.
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