Answer
What is a Marshalls-approved installer?
Independent recognition, against the Marshalls standard, that an installer does quality work.
In short
Marshalls is one of the most established names in paving and hard landscaping, and a Marshalls-approved installer is independently recognised against their standard for quality of installation. It is a useful mark to look for, because it means the work is checked against more than just a claim from the firm itself.
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