Choosing the Season for Renovation or Construction

Weather directly affects concrete, facade, roofing and drying work, while interior renovation depends on it far less. We explain which work suits which season and how to plan around it.

The answer to “when is the best time to start?” depends on the type of work. An interior flat renovation can go ahead all year round, while some stages of house building are very sensitive to the weather. Choosing the season well affects quality, timeline and sometimes cost. Above all, choosing a season is not just about the start date – it is about how every stage will fall across the calendar.

Work most sensitive to weather

Part of the outdoor work depends directly on temperature, rain and wind:

• concreting and masonry – sensitive to both frost and excessive heat;
• facade render, decorative coatings and painting – rain, sun-heated walls and frost all cause defects;
• roofing and waterproofing – they do not bond properly to wet surfaces;
• groundworks – excavation becomes difficult after heavy rain and machinery access is limited;
• landscaping and planting – tied to planting seasons.

For these tasks, manufacturers specify application temperatures and conditions for their materials. These requirements are the main reference when planning the season.

Building in the hot season

Summer is considered the active building season, but heat brings its own risks. Concrete and cement-based mixes lose water very quickly, which disrupts curing and can cause surface cracking. That is why fresh concrete is kept moist and covered in hot weather, and pours are sometimes moved to cooler hours.

On facades, applying render or paint to a wall heated by direct sun is also not recommended: the material dries too fast and adhesion weakens. Work is planned for shaded hours or on the side of the building out of the sun. The workers’ routine in hot weather also needs consideration, as it affects daily productivity.

The cold and rainy season

In cold weather the main risk is frost. Water freezing in concrete or mortar that has not yet set damages its structure. In such conditions either special measures are taken – heating, covering, admixtures – or the work is moved to a more suitable period. In rainy periods, roofing and facade work frequently stops and groundworks become harder.

That is why an important goal in house building is to “close” the building before the cold, wet season begins: roof on and windows in. After that, interior work depends much less on the weather and the winter months are used productively.

Interior renovation: conditions matter more than season

In a flat renovation, conditions in the room matter more than the season. Plaster, screed, skim coats and paint need a certain temperature and ventilation to dry properly. In a building without working heating, drying takes much longer in winter, while in summer a direct air-conditioning draught or hot air through an open window can make surfaces dry unevenly.

Parquet and timber elements are especially sensitive. They need to acclimatise to the room before installation, and humidity in the room should be at a normal level. Laying a timber floor without measuring the moisture of the screed is risky in any season.

Air-conditioning also needs planning: the lines are installed during rough works, but if the units themselves are installed and tested before the season they are needed, no comfort is lost.

The best time for design is the season before building

The most practical seasonal advice is simple: complete design, approvals and estimates during the months least suited to construction. Then, when the favourable season starts, time goes straight into building rather than paperwork.

Long-lead items – windows, glazed walls, special stone, stairs – can also be chosen and ordered during this period, so that their installation falls correctly in the schedule.

Seasonal planning checklist

• List all outdoor work separately.
• Check the manufacturer’s application conditions for each material.
• Plan for the roof and windows to be installed before the cold season.
• Include curing and protection measures for concrete and facade work in hot weather.
• Provide suitable temperature, ventilation and humidity for interior work.
• Schedule design and ordering for the months before construction.

Because Zaferoğlu İnşaat handles both construction and renovation, excavation, roofing and interior work can be sequenced by season within a single plan. Thinking about a start date? Check with us, calendar in hand, which works must be finished before the wet and frosty months.