Photo for illustration only
Building Maintenance
Extending a building's life from the inside out.
Waterproofing, leak sealing, rust prevention and building life extension — from the lift pit to the roof.
Work we handle
Elevator pit waterproofing
We stop standing water at its source and prevent equipment failure
Rooftop & balcony waterproofing
We choose the method after examining the substrate.
Exterior wall repair
Cracks, chips, and resealing of joints.
Leak repair
We find where the water gets in, then stop it
Rust & corrosion prevention
Treatment that stops rust advancing on steelwork, handrails, and equipment frames.
Bridge maintenance
Inspection, repair and life extension
Buildings in Hokkaido deteriorate differently from those on Honshu
Water soaks in, freezes and expands, then thaws and lets more water in. Repeated many times over a winter, this forces the concrete apart from the inside. That is why a repair that only seals the surface tends to fail in the same place the following season. We work on the principle of stopping the path the water travels.
How the work proceeds
Rather than sealing the visible exit, we identify where the water enters and the path it takes, then plan the work. Seal only the exit and the water finds another weak spot.
1. Hear the situation
Since when, at what time of year, and how much. A photo alone is fine
2. Inspect the site
We find where the water enters and the path it takes — free up to this point
3. Propose method and scope
We set out why that method and why that scope
4. Work and sign-off
The same person sees it through, and reports in a form you can keep
Safety first — protecting people, buildings and business.
What we check first on a Hokkaido building
Put it off as you might elsewhere in Japan, and the same spot opens up the following season. On a site check, these are the four places we look at first.
Edges and sealant
However clean the surface, water gets in wherever the edge has split
Around the coping
Joints in the parts sitting on top of a wall are where water gathers
Faces that never see the sun
Less drying time means more freeze-thaw cycles
Steelwork exposed to de-icer
The lower treads of outdoor stairs and steel plates at entrances rust faster than the rest
Carrying on while you stay open
For shops and tenanted buildings there are two approaches: splitting by time (after closing, early morning) or by area (one zone at a time). Low-odour materials are sometimes an option. We decide where your customers will walk before setting the schedule, and can post guides where the flow of people changes.
Gallery
Photos are for illustration only.
Start with a simple enquiry
Security, building maintenance, signage & DX — we take every enquiry