How does Riyadh's heat affect stored timber?
Riyadh's high heat (45–48°C in summer) causes shrinkage up to 2–3% in softwoods, surface cracking, and resin migration in plywood. Direct sun on exposed sheets reduces density and degrades mechanical properties by 10–15% within a single month.
Store timber in **shaded warehouses with heat-reflective roofs** or under breathable canvas covers. Avoid storage on asphalt, which exceeds 60°C in summer and conducts heat directly into the bottom layers.
For long-duration projects, use climate-controlled warehouses at 25–30°C and 45–55% humidity, especially for hardwoods, natural veneer, and E1-grade MDF.
How do I handle Riyadh's low humidity?
Riyadh's low humidity (5–15% in summer) dries timber, causing shrinkage and cracking, especially in hardwoods and veneers. Solution: acclimate the timber on site for 72–96 hours before installation at the expected ambient humidity (typically 40–50%).
For parquet flooring, leave the boards in the room for 48–72 hours before fixing, with the AC running at the final use temperature. This prevents post-installation shrinkage.
Timber from humid origins (Indonesia, Malaysia) arrives at 15–20% moisture content and needs gradual drying to 8–12% suitable for Riyadh, otherwise rapid cracking occurs.
How do I protect timber from Riyadh dust?
Riyadh's dust is heavy (exceeds 150 µg/m³ in sandstorm season) and infiltrates between sheets, scratching surfaces and impairing later finishes. Cover stacks with breathable cloth or non-airtight plastic that allows ventilation, and clean weekly with a soft brush or low-pressure compressed air.
Avoid sealed plastic covers that trap moisture leaving the wood and cause surface mould. Breathable canvas (such as jute) is the optimal cover in Riyadh.
For natural veneer and finished doors, store in sealed cardboard boxes with silica packs to control humidity, and open only just before installation.
How should I rack and stack timber?
Raise timber 10–15 cm above the floor on timber bearers or plastic pallets. Stack horizontally with stickers (spacers) every 60 cm to allow airflow between sheets. Stack height should not exceed 1.5 m to prevent crushing of bottom sheets. Leave 80 cm aisles between stacks for access.
Separate timber by type and thickness in dedicated stacks for easier inventory and handling. Keep 18 mm Indonesian plywood in its own stack apart from 12 mm Chinese plywood to avoid field mix-up.
Sticker spacers must be the same wood species (e.g., pine with pine) to prevent resin transfer between species, and must align vertically to distribute load evenly.
What ventilation is required in a timber warehouse?
Good ventilation balances moisture between wood and surrounding air. Provide vent openings of at least 2% of the wall area at two heights (low and high) to create natural cross-flow. Add roof exhaust fans for large warehouses to expel accumulated hot air.
Avoid fully sealed warehouses, which trap timber moisture and cause mould, or fully open ones, which expose wood to dust and sun. The balanced solution is solid walls with screened, dust-protected vents.
MDF and veneer warehouses benefit from light air-conditioning to keep humidity at 50%, especially for sensitive species like walnut and teak veneer that crack quickly in dry air.
What periodic checks are required for stored timber?
Weekly inspection covers five items: moisture measurement with a pin-type meter (target 8–12%), visual check for mould and warp, edge inspection for breaks, label verification for sorting, and dust cleaning. Monthly checks add resin and deep crack inspection.
Timber stored for over 6 months needs re-acclimation before use. Place it at the install location for 48 hours and measure moisture before starting work to avoid post-installation cracking.
Document checks in a field log with date and stack number to track timber that has exceeded optimal storage life (1 year for plywood, 2 for softwood, 3 for hardwood when stored correctly).
What are the common questions about timber storage in Riyadh?
Forbidden for finished and treated timber. Outdoor storage is limited to raw softwood for formwork for less than a month, with canvas cover and protection from direct sun. Hardwood, MDF, and veneer spoil rapidly outdoors.
48–72 hours for plywood and MDF, 72–96 hours for hardwoods and veneer, up to a week for solid parquet flooring. Acclimation is at the install location at final use temperature and humidity.
Mould signs: dark black or green spots, musty smell, white spider-web layer, and softness at edges. Weekly inspection catches mould early; treatment with 5% sodium hypochlorite ends localised infection.
For standard timber (Swedish, plywood) natural ventilation is sufficient with sun protection. Premium timber (veneer, teak, flooring) needs AC at 25°C and 45–55% humidity to preserve quality.
WBP Indonesian plywood lasts 12–18 months in proper storage without losing its properties. Poor storage (direct sun, wet ground) cuts life to 3–6 months, with surface warp and cracking visible.
Industrial areas away from heavy traffic (Second Industrial Area, Al-Sulay, Al-Fakhriyah), as they have less dust and noise. Riyadh Timber stores in a shaded, partially climate-controlled warehouse that preserves quality for up to 12 months.
Need temporary timber storage in Riyadh?
We provide shaded warehouses and staged delivery aligned with your construction schedule, eliminating the need to store large volumes on site. Request a staged supply plan now.