Structural Drying & Dehumidification in Delta

Ladner slabs give up water slowly once the covering is off. Mats go down, air moves over the face, and pinless squares get logged. The LGR has to produce grain depression in a low house. Groundwater at the edge keeps that concrete cool.

The grain log compares edge squares with the interior of the pour. They should converge and hold overnight. Door sills get pins and a dry-standard target. Mats stay down while any square is still sliding. Grains in and out sit on every row so we can see the depression holding.

North Delta hill walls stay cool on the uphill side. The bottom plate there is the long pole on the job. We open the wet cavity, aim movers along it, and run an LGR for grain depression. Sunshine Hills basements repeat this layout.

Plate pins and a wall line go on the grain log each morning beside the grains. Wood should sit aligned with the far end of that same wall and hold overnight. Concrete should stop leading and hold a day. A flat grain number sends us back to the LGR layout.

Annieville plates sit against cool concrete and trail the studs above them. We pin the plate, aim air at the base, and hold grain depression on the LGR. That is what lets the wood fall. The street grid is shorter here, and the plate is still the slow member.

The grain log repeats those pins daily next to the grains. Target is dry framing a few points off, stable overnight. A pinless pass on the slab beside the plate joins the row. A plate that rises overnight is still being fed by the concrete, so the log stays open.

Boundary Bay wind wets top plates and sheathing. Tsawwassen walls take that same driven rain. We open the cavity, pin the plate and the sheathing, and aim movers there. An LGR keeps grain depression so those members can release. This map is the wall, high up.

The grain log lists those high pins on their own lines. Wood should close on a dry standard and hold overnight. Sheathing that lags the plate stays on the sheet. Inlet and outlet grains show whether the outlet air is actually drier. Same holes, every morning.