How the weather affects a Block Paving Driveway

Block paving is known for its durability, but like any outdoor surface, it’s exposed to the elements all year round.

In places like Reigate, Redhill, and across Surrey, the weather can vary a lot, from heavy rain in winter to dry spells in summer. Over time, these changes can affect the condition of your driveway if it's not installed properly or maintained regularly.

Here’s how different weather conditions impact a block paving driveway, and what to watch out for.

Block paving driveway in the rain

Rain and Surface Water

The most common issue caused by UK weather is excess rain. When water doesn’t drain properly, it can pool on the surface or around the edges of your drive.

Over time, this can lead to:

• Moss and algae growth

• Surface staining

• Weakened sand joints

• Frost damage in colder months

Proper drainage is key. That’s why all new block paving driveways should either use permeable materials or direct water into a soakaway or garden area. Without this, you may even need planning permission.

Frost and Ice

Winter weather can also cause problems, especially if water has already settled in low spots or between joints.

When water freezes, it expands. If it’s trapped in the joints or underneath loose blocks, this can cause:

• Lifting or shifting of the blocks

• Cracks or movement along the edges

• Damage to pointing or jointing sand

Driveways with uneven levels, poor drainage, or low-quality foundations are most at risk. Regular inspections and good jointing can reduce this risk - we cover these in our block paving maintenance tips.

Heat and Sun Exposure

While summer doesn’t often cause major issues in the UK, long hot spells can still have an effect.

Prolonged heat may:

• Dry out jointing sand faster, leading to loose blocks

• Fade coloured bricks over time, especially red or charcoal

• Make sealed surfaces feel warmer underfoot

Most good quality blocks are UV resistant, but cheaper bricks may show fading after a few years. If you want to preserve the original look, consider choosing colourfast materials and protecting them with a breathable sealant after the surface has settled.

Flooding and Extreme Weather

Heavy rainfall and flash flooding are becoming more common in some areas of the UK.

If the sub-base hasn’t been installed correctly, floodwater can:

• Wash out the jointing sand

• Weaken the base and cause dips

• Lead to structural movement or erosion under the surface

Using a permeable block paving design or installing water channels can help prevent damage. It’s also important that the surface slopes gently away from your property to direct water to safe drainage zones.

New block paving steps in Crawley with built-in drainage

Leaf Fall, Debris, and Damp Conditions

Autumn can bring a buildup of leaves, seeds, and dirt, especially around edges or near trees.

When left to rot, this organic matter creates the perfect conditions for moss, weeds, or surface staining. Wet debris also makes the surface slippery and can trap moisture in the joints.

This doesn’t usually damage the structure, but it does affect appearance. Most of these issues are preventable with regular brushing and seasonal care, outlined in our block paving maintenance tips.

New vs Old Driveways

Weather affects all driveways, but the impact is different depending on age:

• New driveways are at risk during the first winter if the sand hasn't fully settled or if the surface hasn’t been sealed.

• Older driveways might already have low spots, weak joints, or faded colour, which can make them more vulnerable to damage.

Both need care, but early upkeep is especially important to stop small problems from becoming expensive ones. A well-installed drive, maintained from year one, can easily outlast cheaper alternatives like gravel or tarmac.

Final Thoughts

Block paving is designed to handle the changing British weather, but only if it’s installed correctly and looked after over time.

Rain, frost, and heat all take their toll in different ways. Understanding how the weather affects your driveway helps you spot issues early and plan ahead for maintenance.

For simple steps to protect your drive all year round, see our top 10 tips to maintain your block paving driveway.