How To Repoint a Patio
Is your patio showing signs of wear and tear, with loose, cracked grout and weeds sprouting between the slabs? It’s time to refresh your outdoor space by repointing the patio slabs. Repointing is a cost-effective way to rejuvenate your patio and restore its appearance. In this guide, we’ll walk you through the process step by step, so you can enjoy your patio once again.
What Is Repointing a Patio?
Repointing a patio involves removing old grout and reapplying new grout between the patio slabs. This process not only enhances the aesthetics of your patio but also ensures its longevity.
Who Can Repoint a Patio?
Anyone can repoint a patio with the right materials, some free time, and perhaps a helping hand. However, if you prefer a professional touch, skilled tradespeople can assist with various outdoor tasks, including repointing patios.
When Should You Repoint a Patio?
There’s no fixed schedule for repointing a patio, as the lifespan of patio grout varies based on several factors, including weather conditions and maintenance.
You should consider repointing when you notice cracked or deteriorating mortar, or when weeds start growing between the slabs.
Materials Needed for Repointing
Before you begin, gather the necessary materials based on your chosen method:
Repointing with Cement
Materials:
- Cement
- Pointing bar
- Mixing bucket
- Stirrer
- Trowel
- Soft brush
- Gun injection equipment
- Pointing trowel
- Grout rake
- Hammer
- Bolster/plugging chisel
Repointing with Dry Mix
Materials:
- Cement
- Sand – Builders sand or paving sand are the most suitable choices – steer clear of sharp sand, as it comprises a smooth surface with a high grit content that can result in the mortar appearing untidy and providing a rough walking surface.
- Grout rake
- Vacuum cleaner
- Trowel
- Broom
- Hammer
- Bolster/plugging chisel
Repointing with Resin
Materials:
- Resin compound
- Grout rake
- Broom
- Vacuum cleaner
- Pointing trowel
- Hammer
- Bolster/plugging chisel
Step-by-Step Guide for Repointing a Patio
Step 1: Prepare the Patio
Start by cleaning the patio slabs to remove stains, moss, and dirt. This provides a clean surface to work on.
Step 2: Remove Old Pointing
To begin, it’s essential to eliminate the previous pointing using a lump hammer and either a bolster or a plugging chisel.
After the old pointing has been successfully removed, proceed to cleanse the joints using a stiff brush, and for more resistant pointing, a narrow wire brush can be particularly effective.
You can also use a grout rake to carefully remove the old pointing between all the joints and slabs. Sweep away any residue and dirt.
Step 3: Mix Your Pointing
Typical patio-pointing mortar mix involves a dry blend of cement and sand, allowing it to set firmly within the joints.
Alternatively, you can opt for a pre-made jointing compound mix containing resin or polymeric mortar, which delivers a robust and contemporary finish.
Follow the instructions for your chosen pointing type and mortar mixture. For cement or dry mix, ensure the consistency is workable but not too wet. Use safety gloves when handling the mixture.
Step 4: Apply the New Pointing
- For Cement: Use a trowel to insert the pointing into the joints. Wipe off any excess grout on the slabs with a damp sponge.
- For Dry Mix: Fill the joints with the dry mix and compact it down using a trowel. Sweep away any excess.
- For Resin: Fill the joints with the resin compound and use a broom to brush it inside. Compact the mix with a pointing trowel.
Step 5: Keep It Damp
To prevent the pointing from drying out too quickly, mist it with water using a hosepipe if it starts to lighten in colour. Repeat this process as needed over the next day or so.
Filling Gaps When Pointing Patio Slabs
If you’ve got just a handful of minor gaps in your paving slabs and don’t feel the need to strip away all the existing pointing, start by employing a stiff brush to eliminate any loose debris within the crack or gap.
Next, proceed to fill the void with a suitable dry pointing mix. It’s crucial to select the right pointing mixture tailored to your patio slabs; otherwise, those gaps may resurface over time.
Conclusion
By following these steps and choosing the right method for your patio, you can easily repoint the slabs and revive your outdoor space.
Enjoy your beautifully maintained patio for years to come!
