What is the whitish residue that I have noticed on some of my pavers?
This residue is often referred to as efflorescence, and is both normal and common on concrete and clay brick products. This phenomenon is caused by the natural salt minerals present in the materials used in the production. It is not a product defect nor is it harmful to your pavers. We recommend using efflorescence cleaner to remove this residue.
What can be done to remove moss from the joints of my pavers?
There is little that can be done in damp, shaded areas to prevent moss from continuously growing. However, you can try using 10 parts water to 1 part chlorine bleach to remove the moss. To resolve the problem permanently, consider professional advice to correct the moisture that encourages the growth of moss.
What do I use to adhere my caps to my retaining wall?
We recommend using concrete adhesive for strength and flexibility in securing your wall caps.
What is geogrid?
Geogrid is open-celled directional fabric that is placed between the layers of block at different
intervals to stabilize the soil behind the retaining wall and secure the wall face to the earth being retained. Geogrid is laid out perpendicular to the wall face within the compacted soil behind the wall. The height of the wall being constructed, soil characteristics, and the pressure on the wall
caused by the slopes, structures, and/or paved areas all affect the proper placement of Geogrid.
Should I back fill my wall?
We recommend that the first 12″ behind the wall be backfilled with at least 3/4″ clean stone. This will assist in easing any hydrostatic pressure. It is best to use compacted soil in the area directly behind the stone.
Should I use a drainage system behind my wall?
We recommend using a drainage system behind the wall at grade level.
Is it possible for weeds to grow between my pavers?
We recommend using polymeric sand in the joints of your pavers to minimize the growth of
weeds and grass.
Should I use a filter fabric under my installation, and if so when and where should it be used?
We strongly recommend using a filter fabric under pavers to prevent the base from deteriorating and failing. The filter fabric should be laid on the top of the compacted soil in the excavated area.
How much modified stone base material and sand should be used in installing walkways, patios, and/or driveways?
We recommend a minimum of 4″ to 6″ stone base for patios and 6″ to 12″ for driveways, while the setting bed sand should be at least l” thick.
Should I use mortar to put my retaining wall together?
No, the walls are built without mortar so water can pass through the wall joints and minimize
hydrostatic pressure behind the walls.
Should I install my paver edging first or last?
It depends on the design. Paver edging can be installed either first or last depending on the
project. If you are installing a paver design with no square corners, it is more efficient to install edging first and “frame” the design. If you are installing a design with square corners, it is often more efficient to install edging last to minimize cutting.