Kent,
United Kingdom 
What depth of gravel should we be considering on top of membrane? Shrubs will be planted through the membrane.
31 Aug, 2010
Kent,
United Kingdom
What depth of gravel should we be considering on top of membrane? Shrubs will be planted through the membrane.
31 Aug, 2010
Depends what its going to be used for - if its just a gravel bed that no one walks on, up to 1 inch should do. If its for walking over, then 1-2 inches.
31 Aug, 2010