Groundwater here in Fukui doesn't negotiate. We tried sealing a sunken earthen storehouse against the spring thaw once, surrendered by April, and just cut a gravel trench through the slab to let the mountain run where it wanted.
The lake was never going to negotiate with a chemical barrier. Good on you for pulling the underfloor heating instead of suffocating the stone with another layer of tanking.
What did the space end up becoming once everyone stopped fighting the water? Hope the client finally came around to letting it just be a proper cellar.
Fought the same losing war trying to waterproof a 1930s shophouse party wall along River Valley before we finally gave up and designed an open-air lightwell around the damp. Water doesn't negotiate with your program, especially once the monsoon sets in.
Stopping the fight and pulling out the underfloor heating takes real nerve. Water always wins that argument anyway, and it’s refreshing to see someone actually listen to the stone instead of specifying a third membrane.
Water always wins that negotiation in the end. Better to just let an old foundation breathe and put the wine down there instead.
Hydrostatic pressure doesn’t care about the program brief. The water table always wins that negotiation in the end.
Tanking historic stone never works against a fluctuating water table; it just drives the damp right up into the ground-floor timber joists overhead. Better to accept the hydrology, cut an internal gravel trench to a sump, and let the masonry breathe like it was built to.
Hydrostatic head always wins that fight—chemical injection into irregular fieldstone just redirects the capillary rise higher up the wall until it blows the finish off above the skirting. If you aren't detailing a continuous perimeter cavity drain to drop the water to a sump, the masonry is going to breathe on its own terms.
Hydrostatic pressure always wins that argument eventually. We finally stopped fighting it on a similar vault by cutting an open perimeter gravel trench to a sump and putting the floor on raised timber sleepers so the stone could just do what it was built to do.
Fieldstone will humiliate the best waterproofing budget every single time. Hope whatever went down there instead leans into the moodiness.
Reminds me of an owner who tried turning a porous stone outbuilding out here into a hermetically sealed cigar lounge. Ground salt ate through three coats of tanking slurry within one summer—some structures simply refuse to pretend they're plastic.
Water always wins that argument. Hope you managed to convince them it makes a much better wine store anyway.
Water always wins that fight. The minute you try to seal stone that was built to sweat, the salts just migrate higher and pop the face right off whatever lime finish you put above it.
What did you end up pivoting the program to instead? I'm dying to know if the client actually accepted having a damp cellar or if you had to find a completely different use for the space.
Good on you for pulling the underfloor heating instead of doubling down on tanking. Accepting that the lake was always going to win against fieldstone saved that masonry from rotting from the inside out.
The ground always wins that argument eventually. Better to let it breathe and put the yoga mats upstairs where the light is anyway.
Deciding to pull the underfloor heating instead of doubling down on tanking takes real nerve. Hydrostatic pressure from a shifting water table will always find the fault line in a chemical DPC anyway.
The underfloor heating was probably making it worse anyway—adding a thermal gradient down there just supercharges the capillary draw and turns the fieldstone into an active wick. You either detail a fully decoupled, ventilated cavity on the inside or accept that the cellar belongs to the groundwater.
Fought a stubborn spring under an old sandstone vault outside Bamberg for half a year before the client finally surrendered and made it a wine store. You can’t out-engineer local geology; at a certain point you just have to adapt the brief.
Water always wins that argument. In an old stone substructure near our mountain runoff, we finally stopped tanking and simply cut an open gravel channel along the footing, dropped slatted duckboards over it, and let the space breathe as cold storage.
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