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JMS Aggregates are based in the outskirts of Llanelli and are one of the leading independent building merchants in South and West Wales.  We stock a comprehensive range of building materials which include: Sand, quarry stone, ornamental stone, cement, patio slabs, top soil, concrete blocks and more. 

All listed building materials can be supplied loose or bagged and any quantity is available.  Our website displays a small selection of what we stock, so do please call by and see our full range of products. 

Decorative Gravel

Rockery Stone and Boulders

Decorative Slate

Paving Stones

"You’ve tried the rest – now use the best. That’s JMS in a nutshell."

“We would like to share our experience of our dealings with JMS when we were building our new bungalow.
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We have always found Sandra, Jeff, Liam and every member of staff who work for JMS to be extremely competitive with their prices, courteous when dealing with us either by telephone or in person when we’ve called in the yard and punctual with deliveries – no fobbing off like some other firms we dealt with.  If they give you a date and time – it’s delivered promptly.  They even managed to deliver on the days when we had unexpected material that was needed urgently, taking it all in their stride.  If they did not have it in stock, it was delivered in the majority of cases the following day.

We sourced material to build our bungalow, i.e. blocks, bricks, cement, sills, rendering, paving stones, wood, screws, in fact – everything that we needed to build the bungalow and landscape the gardens.  If we ever built again we would have no hesitation in going to JMS.  We still use them for little projects that keep us busy around the place.  In essence a family friendly firm who deliver when they say they’ll deliver, charge good competitive prices have respect for everyone they deal with in fact as the old saying goes.

You’ve tried the rest – now use the best.  That’s JMS in a nutshell.”

Margaret and Ken Evans, Pontyberem.