How to Weatherproof Your Wooden Garden Playhouse

The unpredictable forces of nature can wreak havoc on unprotected wood. If overlooked, this can cause rot, warping, and deterioration of the structure itself. This is where weatherproofing steps in. It’s a vital step in ensuring the functionality and longevity of your kid’s playhouse.

Discover the benefits of weatherproofing and learn how to safeguard the garden playhouse. This post will guide you through creating a haven that withstands the test of time, so keep reading!

1. Assess and Prepare for Weatherproofing

BillyOh Peardrop Extra Playhouse
BillyOh Peardrop Extra Playhouse

As with other garden buildings, assessing the condition of the playhouse is crucial. This step ensures that you address any existing damage or vulnerabilities. Moreover, it helps lay the foundation for effective protection against the elements. Here’s a checklist to guide you through the assessment process:

Inspect damage

Check for signs of rot, cracks, or splintered wood. Thoroughly examine the entire playhouse structure, including walls, floors, and roof. Look for soft, spongy areas, discolouration, or wood that easily crumbles when touched. Pay close attention to areas near the ground where moisture can accumulate and cause rot.

Examine windows, doors, and joints for gaps or leaks. Test the functionality of windows and doors, ensuring they open, close, and latch well. Check for any signs of water leakage or drafts around these areas.

Look for any loose or missing screws, nails, or fittings. Tighten any loose screws or nails to ensure structural stability. Replace any missing or damaged fittings that may compromise the playhouse’s integrity.

Assess the overall stability and level of the structure. Check if the playhouse sits level on its foundation or base. Look for any signs of leaning or shifting that may indicate structural issues. Ensure the playhouse stands sturdy and secure without excessive wobbling or movement.

Evaluate the condition of the roof. Inspect the roof for missing or damaged shingles, signs of leakage, or sagging. Ensure that the roof is structurally sound and adequately protects the playhouse.

Addressing these issues before weatherproofing helps ensure more effective and long-lasting protection.

2. Choose the Right Weatherproofing Materials

BillyOh Gingerbread Max Playhouse
BillyOh Gingerbread Max Playhouse

There are various weatherproofing materials available on the market. To help you make an informed decision, we’ve provided you with a list, including the pros and cons for each type.

1. Sealants

Sealants provide a protective barrier against moisture, preventing water penetration.

Pros: Easy to apply, transparent options maintain the natural wood look. Offers excellent waterproofing.

Cons: It may require frequent reapplication, and some sealants can alter the wood colour.

2. Stains

Stains penetrate the wood, enhancing its natural colour while providing weather protection.

Pros: Preserve the wood’s appearance, offer UV resistance, and some stains include waterproofing properties.

Cons: May require periodic reapplication, limited colour options compared to paints.

3. Paints

Paints provide a durable and customisable weatherproof coating for wooden playhouses.

Pros: Wide range of colours, offer excellent protection against weathering, can hide imperfections.

Cons: It may cover the wood’s natural grain. Require more preparation and maintenance than stains.

Top tip: Read product labels and reviews and consult with experts. This will help you find the most suitable weatherproofing material for the playhouse.

3. Weatherproofing Techniques

BillyOh Bunny Max Playhouse
BillyOh Bunny Max Playhouse

Weatherproofing your wooden playhouse involves a series of steps to ensure effective protection:

Step 1: Surface preparation

  • Clean the playhouse thoroughly, removing dirt, debris, and any existing weatherproofing materials.
  • Use a mild detergent, scrub brush, and water to wash all surfaces.
  • Rinse the playhouse with clean water and allow it to dry completely.

Step 2: Repair and replace

  • Inspect the playhouse for any damaged or rotted wood.
  • Replace any compromised parts, such as boards, shingles, or windows.
  • Repair cracks or gaps with suitable wood fillers or caulk.

Step 3: Apply primer (if applicable)

  • If using paint, apply the primer according to the manufacturer’s instructions.
  • Priming helps enhance the adhesion and durability of the paint.

Step 4: Weatherproofing application

  • Follow the instructions on your chosen weatherproofing material for application techniques.
  • Use brushes, rollers, or sprayers for an even and thorough coverage.
  • Apply the sealant, stain, or paint evenly, working in the direction of the wood grain.

Step 5: Multiple coats (if necessary)

  • Depending on the product’s instructions, apply additional coats for better protection.
  • Allow each coat to dry fully before applying the next.

Step 6: Considerations for specific parts

  • Windows and doors: Ensure proper sealing around frames to prevent water infiltration.
  • Roof: Apply weatherproofing material to roof shingles, focusing on overlapping areas.
  • Joints and corners: Pay extra attention to these vulnerable areas, providing ample coverage.

Step 7: Safety precautions

  • Wear appropriate protective gear, such as gloves, safety goggles, and a mask.
  • Work in a well-ventilated area to avoid inhalation of fumes.
  • Follow the manufacturer’s guidelines for safe handling and disposal of materials.

Step 8: Drying and curing

  • Allow the weatherproofing material to dry and cure per the product’s instructions.
  • Avoid exposing the playhouse to rain or moisture during this period.

By following these techniques, you can ensure effective protection for your wooden playhouse.

4. Maintenance and Long-Term Protection

BillyOh Lookout Log Cabin Playhouse
BillyOh Lookout Log Cabin Playhouse

Weatherproofing your wooden playhouse is not a one-time task. Regular maintenance is essential to ensure its long-term weather resistance. Here’s how you can keep your playhouse in optimal condition:

Maintenance schedule

Set reminders for cleaning, inspections, and reapplication of weatherproofing materials. Aim for at least an annual maintenance routine. Note: adjust frequency based on local weather conditions.


Regularly clean the playhouse to remove dirt, debris, and mould buildup. Use a gentle detergent and water solution to wash all surfaces. Rinse thoroughly and allow the playhouse to dry completely.


Perform routine inspections to identify any signs of damage or wear. Check for cracks, loose fittings, or areas where weatherproofing may have deteriorated. Address any issues promptly to prevent further damage.

Reapplication of weatherproofing materials

Follow the recommended timeline for reapplying sealants, stains, or paints. Strip off any old or flaking weatherproofing materials before applying new ones. Apply the new coats according to the product’s instructions, ensuring thorough coverage.

Protection from insects and mould

Inspect the playhouse for any signs of insect infestation, such as termites or ants. Treat affected areas with appropriate insecticides or consult with pest control professionals.

Ensure proper ventilation to prevent moisture buildup, which can lead to mould growth. Regularly check for signs and address them ASAP with suitable cleaners or fungicides.

Additional tips:

  • Trim vegetation around the playhouse to maintain airflow and minimise moisture accumulation.
  • Keep gutters and downspouts clean to prevent water from overflowing near the playhouse.
  • Regularly check the playhouse’s foundation for any shifting or settling. Address any issues right away.


The investment of time and effort in weatherproofing your children’s wooden playhouse will pay off! It ensures a sturdy and long-lasting structure that can withstand various weather conditions. Most importantly, the children will continue to create lasting memories for many years!

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