
Authored By: Richard
This article was written by Richard, Founder of WhatShed, with the help of a trained AI specialising in UK garden buildings. The AI assisted in generating and organising ideas under Richard’s guidance.

Restoring an old summer house can be a fulfilling project, allowing you to breathe new life into a cherished space. Whether it’s a quaint wooden structure offering shelter from the sun or a larger insulated summer house intended for year-round use, the restoration process can differ significantly based on the building’s condition, materials, and intended use. For comprehensive information regarding various summer houses, check out our section on Summer Houses.
In this article, we will outline step-by-step instructions to effectively restore an aging or neglected summer house. From repairing structural issues to upgrading insulation and repainting, we will cover the essentials and offer cost estimates for common repairs to help you plan your project effectively.
Assessing Your Old Summer House
Before diving into restoration, it’s critical to assess the condition of your summer house. Here are key areas to examine:
- Structural Integrity: Check for rot, decay, or pest damage in wooden structures. Look for signs of wear or damage on load-bearing walls and the roof.
- Insulation: Determine if the existing insulation is adequate, especially if you intend for the summer house to be used year-round. Calculate whether an upgrade is necessary.
- Roof Condition: Inspect the roof for missing tiles or leaks and assess whether a replacement or reparative measures are needed.
- Pest Infestations: Look for signs of pests, such as holes or droppings. Early detection can save costs down the line.
Step 1: Repairing Structural Issues
Structural repairs are often the first step in restoring an old summer house. Depending on the extent of damage, here are common repair jobs:
- Replacing Floor Joists: If there is noticeable sag or soft spots, you may need to replace affected joists. Ensure that the new wood is treated to resist moisture.
- Wall Repairs: Repair or replace sections of the wall that are damaged or rotting. Use high-quality, treated timber for longevity.
- Reinforcing the Roof: If the roof has visible damage, consider replacing tiles or shingles and check the rafters for stability.
The costs for these repairs can vary significantly based on the materials used and the size of the summer house. For instance, treating and replacing wooden joists can range from PS15 to PS30 per linear metre, depending on whether you opt for softwood or hardwood.
Step 2: Upgrading Insulation
Insulation is a crucial aspect often overlooked in older summer houses. Modern insulation materials can dramatically improve comfort levels and energy efficiency. Here’s how to proceed:
- Assess Current Insulation: In older wooden summer houses, insulation may be insufficient; consider upgrading to a more efficient option such as foam boards or insulated panels.
- Wall and Roof Insulation: Insulate the walls and roof with products that meet Building Regulation standards for energy efficiency. This may include using reflective foil for roofs or comprehensive batts for walls.
New insulation can range from PS20 to PS50 per square metre, depending on the materials selected.
Step 3: Repainting and Finishing Touches
Once structural repairs and insulation upgrades are complete, you can move on to aesthetics!
- Preparation: Begin by stripping old paint, repairing surfaces, and sanding down rough areas. This ensures a smooth, even application for the new coat.
- Choosing Paint: Select a quality exterior paint or wood stain suitable for outdoor use. High-quality paints can resist weather conditions better and offer longer-lasting finishes.
- Application: Use a roller for larger areas and a brush for detail work. Aim for at least two coats for a professional finish.
The budget for repainting will vary widely based on the area covered, with an average cost ranging from PS15 to PS30 per litre of exterior paint, covering approximately 10 square metres per litre.
Step 4: Final Inspection and Maintenance Plan
After completing your restoration, conduct a thorough inspection to ensure everything is secure and operational. Additionally, set up a maintenance plan:
- Regular Checks: Schedule seasonal inspections for structural integrity and insulation performance.
- Cleaning: Regularly clear debris from the roof and gutters to prevent water damage.
- Pest Management: Implement preventative measures to reduce the chance of infestations.
Conclusion
Restoring an old summer house can significantly enhance its beauty and function. By focusing on structural repairs, insulation upgrades, and aesthetic improvements, you can create a resilient and inviting space for relaxation or entertaining. Remember, investing time and effort in proper restoration techniques today will yield long-term satisfaction and potentially increase the value of your property.
If you are interested in exploring various summer house options or wish to learn more about specific types, check out our detailed guides on insulated summer houses, wooden summer houses, large summer houses, and modern summer houses. Happy restoring!