Putty

Putty is a soft, malleable material used to fill gaps, cracks, or joints in construction and finishing work. It can be made from natural materials (like linseed oil and chalk) or synthetic compounds.

Why it matters:

• Seals joints around windows, doors, or panels to improve airtightness and prevent drafts.
• Can be used to smooth surfaces before painting or finishing.
• Helps protect structures from water infiltration, which reduces the risk of damage or rot.

How to use it:

• Apply with a putty knife or spatula into the gap or crack.
• Smooth the surface and allow it to dry or cure before painting or finishing.
• Some types remain flexible, which is important for joints that expand and contract with temperature changes.

Example:

• Linseed oil putty → traditional, breathable, good for wooden windows.
• Acrylic or silicone putty → synthetic, flexible, water-resistant, often used around modern windows or bathrooms.