Screeding & Laying Surface Preparation
Quality Materials – Always!
Here at Moortown Paving & Driveways quality materials are used throughout our projects. Surface preparation beneath the paving is top priority as getting this right is actually one of the most important parts of the paving process.
Block Paving – What not to do…
Many paving companies in Yorkshire use sand for bedding paving blocks upon but this can be problematic in the future. To give an example, when sand gets wet it becomes highly unstable under pressure. Imagine a sinking effect when you stand on wet sand on a beach! This property of sand makes it unsuitable for use under block paving as of course when you drive over it the same sinking effect occurs. Over time you will begin to notice paving blocks sinking, separating and as more time goes by you will start to see troughs which look terrible. Using sand also means that eventually as the joints open in the block paving weed growth will become a serious problem.
Get it right – first time!
Despite the points raised above, sand is still the most common choice for bedding paving blocks by many other installers due to it being readily available and at a low cost.
Moortown Paving & Driveways ensure these problems are eradicated by their use of glass aggregate. We particularly love the fact that not only is Glass aggregate a more superior choice for use as a bedding layer under a paving project but it is also a recycled product made from recycled glass and is therefore environmentally friendly.
The superior qualities of Glass Aggregate are:
- Environmentally friendly
- Does not hold water like Sand does
- Paved surfaces dry faster than a surface laid on sand
- Interlocking aggregate which forms a harder layer that withstands loads placed upon it.
The glass aggregate is sized no larger than a pea and has been tumbled to take away any sharp edges. The aggregate is screeded in a thin layer by the installation team over the prepared sub-base and provides a hard, stable, free draining bedding layer.
When blocks are laid on normal sand, the moisture held within the sand gets transferred directly to the blocks whereas the free draining glass aggregate layer will remain dry and therefore not transfer moisture to the blocks. Moss growth is therefore inhibited as blocks only remain damp after rainfall for short durations and are therefore an unsuitable habitat for moss growth.