AQA GCSE Design and Technology · 8552
Paper 1
Revise: Surface treatments and finishesTanalising is a preservative treatment used for outdoor timber, including fences and garden furniture. Preservative is forced into the timber under pressure to help protect against fungal decay and insect attack. Its main purpose is durability rather than creating a glossy surface.
- Revise: Applying surface treatments
Pressure-treating timber with preservative chemicals to improve resistance to rot, fungi and insects.