Canton: St. Gallen
Waterproofing contractor in the canton of St. Gallen
Waterproofing contractor in the canton of St. Gallen: describe the work, the exact location and the conditions on site. Add your preferred dates and useful photographs to prepare your quote request.
Local quote request
Describe your project now
Share the work needed, the postcode and any photos you have. A clear request helps our team forward it to the relevant companies.
- No client account required
- Request reviewed before forwarding
- Contact details shared only with eligible companies
Your contact details are not published. A summary of the work may be forwarded to the relevant companies.
Quotes and timescales are agreed directly with the companies.
Work and requirements
- Area of the flat roof, terrace or balcony in square metres
- Existing waterproofing: bitumen, PVC, EPDM, resin, and its approximate age
- Symptoms noticed: water ingress, blisters, cracks, ponding water, wet insulation
- Finish wanted: gravel, paving on pedestals, green roof, and your timeframe
Your project in the canton of St. Gallen
The canton of St. Gallen almost entirely surrounds the two Appenzells and stretches from Lake Constance to Lake Zurich. The city of St. Gallen is known for its old town with oriel-windowed houses and for many buildings from its textile era. Rapperswil and Jona, on the shore of Lake Zurich, combine a historic centre with newer residential districts. Wil and Gossau are busy regional centres, while in the Rhine Valley, Altstätten and Buchs lie close to the Austrian border. The Toggenburg, around Wattwil, is a hilly landscape of farms and timber chalets. The canton is German-speaking, but your request can be written in English. For an old house in a town centre, ask your municipality whether the planned work requires approval. Give the municipality and postcode and describe building access, whether the project is in town, by the lake or in the Toggenburg.
- For an oriel-windowed house in St. Gallen's old town, attach photos of the façade and windows.
- In the Toggenburg, say whether the house is isolated and how it can be reached in winter.
- On the shores of Lake Zurich or Lake Constance, describe access to the plot and the space available for materials.
Waterproofing work in the canton of St. Gallen
The canton of St. Gallen offers highly contrasting situations. In the city of St. Gallen, built on damp hills, older buildings and town houses have cellars and buried walls in need of treatment. On the shores of Lake Zurich, in Rapperswil and Jona, recent condominiums have terraces, flat roofs and underground car parks that must stay watertight. In the Rhine Valley, towards Altstätten and Buchs, groundwater close to the Rhine makes some basements vulnerable. The Toggenburg, around Wattwil, has farmhouses and timber houses exposed to snow and runoff. If your house is in an old town, consult your municipality before changing the roof.
- In the Rhine Valley, ask whether a watertight basement tank is better suited than a simple wall treatment, depending on the groundwater level.
- For a condominium flat roof in Jona, give the approximate age of the membrane and any repairs already carried out.
Request a quote in the canton of St. Gallen
Request a quote in the canton of St. GallenQuotes and timescales are agreed directly with the companies.
Who handles your request
- Your request is read by the e-quote.ch team in Geneva before it is forwarded.
- The request is handled according to the trade and work location you specify.
- You compare the replies freely, with no obligation; the quote and contract are agreed directly with the company.
e-devis.ch is operated from Geneva. The platform forwards requests and does not carry out the work. How it works · Contact
Main municipalities
All localities in the canton of St. Gallen
Other trades in the canton of St. Gallen
Frequently asked questions
What existing records help assess a flat roof in St. Gallen?
Provide the roof plan, earlier waterproofing invoices and any known membrane specification. Describe when water ingress occurs and where it appears indoors, using safe photographs. Ask the contractor to inspect the drainage and underlying layers; do not lift the membrane or insulation to establish their condition yourself.
Why should the cause of water ingress be assessed before coating a surface?
Water may enter through joints, drains or adjoining construction rather than the visible wet patch. Provide photographs and any records of earlier work. Ask how the substrate and interfaces are inspected before a waterproofing system is selected or local repair proposed.
What should I compare in waterproofing contractor quotes?
Compare substrate preparation, membrane or resin system, joints and drainage details. Identify insulation and the final surface finish separately. Ask how the installation is checked and which conditions must be met before application, especially where the area is occupied or exposed to weather.
How should I prepare for the waterproofing contractor visit or work?
Provide safe access and existing roof or terrace documents without lifting membranes or entering unsafe areas. Identify drains and retained features on a plan. Agree protection and the sequence with adjoining trades, leaving assessment of damaged substrates and wet insulation to the specialists.