• Looking for a smarter way to manage your heating this winter? We’ve been testing the new Aqara Radiator Thermostat W600 to see how quiet, accurate and easy it is to use around the home. Click here read our review.

Problem complying with APN 12

R

roythegrass

Joined
29 Nov 2010
Messages
26
Reaction score
0
Location
Surrey
Country
United Kingdom
We are laying a patio partially within the RPA of a TPO tree (upon application the LA didn’t want to know!)
In compliance with Arboricultural Practice Note 12 (APN12) and BS5837 the layers are as follows,
starting from the ground up:
Ground
Geo textile membrane
Geocell (or similar) cellular root protection system in filled with aggregate.
Geo textile membrane
Sharpe sand.
Pavers.
The infill for the Geocell is specified as angular sub base aggregate. However angular aggregate has sharp edges which could puncture the overlaying Geo textile membrane with the weight of the sand, pavers and foot traffic thereby allowing the sand to wash through. How can this be resolved? Two layers of Geo textile?
Any advice would be much appreciated.
 
Angular subbase will not puncture a proper geotextile. You should be using non woven needle punched fabric like terram 1000.

A light pass with a vibrating plate will knock down any large protruding stones before laying the top sheet.
 

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.


Are you a trade or supplier? You can create your listing free at DIYnot Local

 
You must log in or register to reply here.
Back
Top