Winterising Your Gstaad Chalet: Seasonal Maintenance Guide

Gstaad sits at 1,050 metres. Temperatures drop below minus 15°C in January. Snow accumulates on roofs, around foundations, and across access roads from November through April. If you are not in your chalet year-round, preparing it for winter is not optional. It is the difference between returning to a warm home and returning to burst pipes and water damage.

Heating: Keep It Running

The Critical Rule

Never turn off the heating entirely in a Gstaad property during winter. Even if the chalet is unoccupied for months, the heating must maintain a minimum interior temperature of 8-10°C to prevent:

• Frozen pipes (the most common and expensive winter damage)
• Condensation and mould on interior surfaces
• Damage to timber joints as wood contracts in extreme cold
• Cracking of stone and tile surfaces

Heating Systems

Smart Controls

Modern systems allow remote monitoring and control via smartphone. If your chalet does not have this, it is worth the investment (CHF 2,000-5,000 to retrofit). You want to know:

• Current interior temperature
• Heating system status (running / fault)
• Alerts if temperature drops below a threshold

A heating failure at minus 15°C can freeze pipes within 24-48 hours. Remote alerts give you time to call a local caretaker.

Pipes and Water

Before Leaving

If the chalet will be unoccupied and you are confident the heating will maintain frost protection:

• Leave the heating on frost protection (8-10°C)
• Open under-sink cabinet doors to allow warm air to reach pipes against exterior walls
• Set taps to a very slow drip on exposed lines (the movement prevents freezing)
• Check that the water heater is on its lowest or frost protection setting

If there is any doubt about the heating's reliability:

• Drain the water system entirely. Turn off the main supply, open all taps, flush toilets, and drain the boiler. This is the safest option for extended absences.
• Drain outdoor taps and irrigation lines completely
• Add non-toxic antifreeze to toilet bowls, sink traps, and shower traps to prevent the water seals from freezing and cracking

Exterior

• Disconnect and drain garden hoses
• Shut off and drain exterior taps (Aussenwasserhahn)
• Drain any outdoor water features
• Ensure drainage channels around the foundation are clear of leaves and debris

If Pipes Freeze

If you or your caretaker discover frozen pipes:

1. Do not attempt to thaw with an open flame
2. Turn off the water supply immediately
3. Apply gentle heat (hair dryer, heat lamp, warm towels)
4. Call a plumber · frozen pipes may already have cracked, and the damage becomes visible only when the ice melts

Snow and Roof Loads

Roof Snow Load

Gstaad chalets are engineered for heavy snow loads. The building code requires roofs to withstand the loads typical for the altitude and exposure. But accumulation beyond design limits can occur in exceptional winters.

• Typical roof snow load capacity: 200-400 kg/m² (varies by building age and design)
• When to clear: If snow depth exceeds 1-1.5 metres on the roof, or if you notice doors sticking or structural creaking
• Professional clearing: Do not climb on a snow-covered roof. Hire a professional with proper safety equipment.

Avalanche Risk

Some properties in the Saanenland are in or near avalanche zones (check the cantonal hazard maps, which you should have reviewed during due diligence). If your property is in a yellow or blue zone:

• Know the local avalanche warning system
• Ensure any protective structures (snow fences, deflection walls) are maintained
• Follow municipal instructions during high-danger periods

Snow Clearing

• Access road: If your chalet is on a private road, you are responsible for clearing. Budget CHF 3,000-8,000 per season for a snow-clearing contract.
• Municipal roads: The Gemeinde clears public roads, but response times vary. During heavy snowfall, access may be delayed.
• Parking: Clear snow from around your vehicle and keep chains available (mandatory equipment in Swiss winter driving).
• Paths and steps: Clear and salt/grit regularly to prevent ice. You are liable if someone slips on your property.

Timber and Exterior

Facade Maintenance

Gstaad's timber facades are the defining feature of the architecture. Winter is hard on them:

• Check staining/treatment before winter. Properly treated timber withstands moisture and UV. If the stain is peeling or fading, treat it before the first snow (ideally in late summer or early autumn).
• Clear snow contact. Snow piled against timber facades causes moisture penetration. Clear it away when accumulation occurs.
• Check cladding. Look for loose boards, gaps, or damage that could allow snow and ice to penetrate behind the cladding.

Windows and Doors

• Check seals and weather stripping. Replace any that are cracked or compressed.
• Ensure windows close tightly. A drafty window wastes heating energy and can cause localised condensation and mould.
• Lubricate locks and hinges (use silicone-based lubricant, not WD-40, which can freeze).

Gutters and Drainage

• Clear gutters and downpipes of leaves before the first snow
• Check that downpipes discharge away from the foundation
• Consider heated gutter cables if ice dams are a recurring problem (CHF 1,500-4,000 to install)

Insurance

Standard Building Insurance (GVB)

Canton Bern requires mandatory building insurance through the Gebäudeversicherung Bern (GVB). This covers:

• Fire
• Storm and hail
• Water damage (including burst pipes)
• Natural hazards (flooding, landslide, avalanche, rockfall)

What GVB Does Not Cover

• Contents (furniture, art, personal belongings)
• Liability
• Loss of rental income
• Damage caused by negligence (e.g., leaving the heating off and pipes burst)

Supplementary Insurance

Consider:

• Contents insurance (Hausratversicherung): For furnishings, art, and personal items. Essential for furnished chalets.
• Liability insurance (Haftpflichtversicherung): If someone is injured on your property (e.g., slipping on ice).
• Vacancy insurance: Some policies have reduced cover for properties unoccupied beyond a certain period (typically 60-90 days). Check your policy and inform your insurer if the chalet will be empty for extended periods.

The Negligence Risk

If pipes burst because you turned off the heating and failed to drain the system, GVB may reduce or deny the claim on grounds of negligence. Maintaining frost protection or properly draining the system is not just good practice · it is an insurance requirement.

Property Management

For chalets that are unoccupied for significant periods, a local property manager or caretaker is essential:

What a Caretaker Does

• Regular inspections (weekly in winter, monthly in summer)
• Checks heating system, temperature, and humidity
• Clears snow from access paths and around the building
• Monitors for water leaks, pest intrusion, and storm damage
• Coordinates emergency repairs
• Manages deliveries (oil, pellets, supplies)
• Prepares the chalet before your arrival

Cost

• Basic caretaker service: CHF 300-800 per month
• Full property management (including rental management, maintenance coordination, accounts): CHF 500-2,000 per month or 5-8% of rental income
• Emergency callouts: CHF 100-200 per visit plus any repair costs

See the rental strategy guide for management options.

Seasonal Checklist

Autumn (Before Winter)

• [ ] Service heating system (annual inspection and cleaning)
• [ ] Check oil or pellet supply · order if needed
• [ ] Clear gutters and downpipes
• [ ] Check roof tiles and flashing
• [ ] Treat timber facades if needed
• [ ] Drain and disconnect exterior water lines
• [ ] Check window and door seals
• [ ] Test smoke and CO detectors
• [ ] Confirm snow-clearing contract is in place
• [ ] Check insurance coverage and notify insurer of vacancy periods
• [ ] Set heating to frost protection if leaving
• [ ] Arrange caretaker visits

Spring (After Winter)

• [ ] Full property inspection for winter damage
• [ ] Check roof for missing tiles or damage from snow load
• [ ] Inspect timber facades for moisture damage
• [ ] Reconnect exterior water lines and check for leaks
• [ ] Service heating system (end-of-season)
• [ ] Clear drainage channels
• [ ] Check for pest intrusion (mice, martens)
• [ ] Open windows and ventilate thoroughly

Frequently Asked Questions

What is the biggest risk to an unoccupied chalet in winter? Frozen pipes. A burst pipe in an empty chalet can cause tens of thousands of francs in water damage before anyone notices. Maintain heating on frost protection or drain the system completely.

How much does winter maintenance cost? Budget CHF 5,000-15,000 per season for heating fuel, snow clearing, caretaker visits, and routine maintenance. Higher for larger properties or those with pools.

Can I turn everything off and just drain the system? Yes, but draining must be thorough. Every tap, toilet, trap, and appliance must be emptied. Residual water in a single pipe can freeze and crack. If you are not confident, have a plumber do it.

Do I need a caretaker? If the chalet is unoccupied for more than a few weeks in winter, strongly recommended. A weekly check can catch a heating failure before it becomes a pipe failure.

For a confidential conversation about your search or sale, contact The Gstaad Collection.