With winter on the way, we’re all beginning to think about how to keep our homes warm and comfortable. One often-overlooked area is your windows — especially if you have beautiful old wooden ones.

These windows can lose a lot of heat if they aren’t properly maintained, but if you’re not up for extensive repairs like upgrading to double-glazed windows or replacing them entirely, don’t worry. There are affordable solutions for how to seal old wooden windows and improve their insulation without a big expense.

From adding draught seals for wooden windows to applying a few protective treatments, these easy steps can make a noticeable difference in keeping the cold out and your energy bills down. Scott James sash windows specialists are a great help if you’re looking for professional service with affordable, effective sealing wooden windows solutions.

1. Seal around your wooden window frames

One of the best ways to winter-proof your windows is to make sure the frames are sealed tightly. Over time, natural expansion and contraction can create small gaps around the frames of wooden windows, letting cold air sneak in. Sealing around wooden window frames with the right materials can stop these drafts and make a big difference in your home’s warmth. This is especially useful when you seal windows for winter.

• Inspect for gaps: Slowly run your hand around the edges of the window frame on a windy day, or use an incense stick to help identify drafts. If you feel air or see smoke drifting, it’s a sign there’s a gap that needs sealing.
• Apply weatherproof caulk: Choose a silicone sealant designed for outdoor use and apply it with a caulking gun along the edges of the frame. A putty knife can help smooth out the sealant for a clean, seamless finish.
• Finish up: Wipe away any excess with a damp cloth to keep everything looking neat.

Tip: Pick a dry, mild day for sealing, as applying caulk in very cold or damp conditions can affect its performance. Give the sealant at least 24 hours to fully cure before it comes into contact with any moisture.

2. Add draught seals and insulating strips

For the moving parts of your window, like the sashes, adding draught seals for wooden windows or weatherstripping is an excellent way to keep the cold out. This type of weatherproof seal is easy to apply and doesn’t require any major work. Here’s a quick guide to applying draught seals and brush strips:

• Choose the right material:
  Silicone or rubber strips are flexible and work well on wooden frames. For larger gaps, especially along the sliding sections of sash windows, draught-proofing brush strips are a great option.
  
• Measure and cut to fit:
  Measure each side of the window carefully and cut the strips or brush to fit snugly along the edges. This ensures a tight seal that won’t interfere with opening or closing the window.
  
• Install with adhesive sealant:
  Apply a little adhesive sealant to keep the strips or brush in place, forming a watertight seal. Press around the edges firmly to ensure it holds well. This extra layer of insulation can help keep your heating bills down by keeping warm air in and cold air out.
  

Tip: Make sure the surfaces are clean before applying the strips so the adhesive sticks well. For larger windows, try applying the strips in small sections for a snug, secure fit.

3. Clean and protect the wood

Wooden windows need a little extra care, especially in winter when moisture and freezing temperatures can cause untreated wood to warp, rot, or crack. Giving your windows a fresh coat of paint or wood preservative can help protect them and keep them looking great.

• Prep the surface: Start by using a putty knife or sandpaper to remove any old, flaking paint. Wipe down the wood with a damp cloth or clean it with a mild soap solution to remove any dust.
• Apply a sealant: Choose a sealant designed for timber frames to protect the wood from moisture absorption, which can cause rot.
• Finish with paint or stain: Apply a layer of quality paint or wood stain. Not only does it look good, but it also adds a layer of protection against the winter elements, helping the wood last longer.

Tip: Take a look at your windows each year to spot any early signs of wear or damage. For older or period property windows, regular upkeep is especially important to maintain their original charm.

Preparing your wooden windows for winter doesn’t have to involve costly upgrades or replacements. By sealing around window frames, adding draught seals, and giving the wood some protective care, you can keep the cold out and make your home more comfortable all season long. These small efforts can make a big difference in your home’s warmth and energy efficiency, helping you save on heating costs and keep cozy through the winter months.