Oldcastle Base & Seal · Ashford Vale & the Nine Elms · Since 1979
A dry basement is not luck, a coating, or a prayer. It is water management, in the right order, by people who come back.
The water arrives in order: roof, grade, wall, floor. Cheat the order and you pay for the same rain twice.
One pump is a bet. Two pumps, a battery, an alarm and a way out is a system — and the storm does not get a vote on when the power quits.
Seal, drain, hold — in that order
What the creed installs
Three trades under one roof because the water does not respect the boundaries between them. Every job opens with the order of water checked from the gutter down, and closes with the part of the system you will never think about again.
Seal — $96 the foot
Epoxy for the structural cracks, urethane for the ones that move with the seasons, membranes where the wall itself is the path. A seal is only as honest as the reading behind it — we inject what weeps and leave what has finished, and we say which is which.
Drain — $55 the foot
The interior channel at the footing, collection at every cold joint, all of it daylit to a sealed basin. The floor stops fighting what rises because rising water is given somewhere better to go — and gutters, grade and downspouts are corrected before a single cut is made.
Hold — by the staple and the pier
Carbon-fiber staples at $148 across a bending wall, helical piers at $1,840 under a sinking footing. The string line and the slab profile pick which fight, never the margin — the two repairs share nothing but a toolbox.
The shop, in figures
How an Oldcastle job runs
The order of water, kept
Four movements, in the order the creed fixes them — the same on a cottage as on the Nine Elms grain store.
The reading
Follow the water home
Gutters, grade, downspouts, then the walls and the floor — read in the order rain actually meets them. Half the wet basements in the Vale are a roof problem wearing a basement costume.
The cheap fixes
Correct what is free to correct
Downspout extensions, a regraded swale, a clean sump check valve. If these answer the water, the job might end here — and has, more than once, for the price of a service call.
The install
Seal, drain, hold — as read
Injection for the weeping, the channel and the 2+1 basin for the rising, staples or piers where the structure asks. One crew, nights available, plastic to the stairs.
The year after
We come back
The first anniversary visit is booked before we leave. Readings re-run, the alarm tested on battery, and the file closed with two words the family can bank: still dry.
Sealed, drained, held
Vale work, 2025 — 2026
Six from last season’s book, photographed at the year-after visit rather than at the ribbon — dry is a thing you photograph in hindsight.
Our basement had been “fixed” twice by two outfits and wet again by the third autumn. Oldcastle spent the first hour in the garden, not the basement — and found the downspouts dumping a roof’s worth of water against the north wall. Extensions and a swale in week one, the drain and the two-pump basin in week three. Margaret was right: the water arrives in order, and nobody before her had followed it.
Why do you check the roof before the basement?
Because that is the order the water arrives in. A roof sheds a thousand gallons in one Vale storm; four downspouts discharging at the footing put most of it against your walls. Sealing the wall without correcting that is bailing with the tap running — the creed exists because we kept watching it fail.
What exactly is the 2+1 system?
A primary pump on mains, a secondary on its own battery and its own float, and the “+1” is everything around them: a high-water alarm that texts you, a check valve each side, a sealed lid, and — where the lot allows — a gravity line to daylight for the storm that outlasts both pumps. Any single part can fail on the worst night of the year and the floor stays dry.
Do you really work nights?
The night shift is how the shop started — founder’s hours, kept on for finished basements and grain stores that cannot stop for a week. Same crew either way, and the same rule: plastic to the stairs, quiet work after eight, nothing left half-done overnight.
Injection, staples or piers — how is the decision priced?
By the foot and by the piece, from the lines above, after the reading says which one the house is asking for. The reading is $265 and comes off the work. We have never once sold the more expensive repair a cheaper one would have carried — the creed will not survive it, and the creed is the business.
What if the job ends at the cheap fixes?
Then it ends there, with a service-call invoice and a dry basement — and a story you will tell for twenty years, which is worth more to this shop than the drain we did not sell. It has happened often enough that those families remember us by name.
The shop line
Readings within the week, water emergencies the same day, evenings for finished basements. The $265 reading comes off any work, the year-after visit costs nothing, and Margaret still answers the phone herself. nightshift@oldcastleaseal.example
Same-day water response, Vale-wide · evenings for finished basements · (555) 024-1978 · nightshift@oldcastleaseal.example
Start with the reading
Tell us where the water shows up and when it started. The $265 reading follows the water home — roof, grade, wall, floor — and comes off any work the verdict names. nightshift@oldcastleaseal.example