Choosing the correct trailer to carry bark at 44 tonnes on UK roads is all about volume. Bark is one of the lightest bulk loads there is - around 240 - 300 kg/m3 - so a trailer fills long before it reaches legal weight. It moves from sawmills to garden centres, landscapers, playgrounds, equestrian centres and biomass plants.
Short answer: the best trailer for carrying bark in the UK is a large Knapen biomass, recycling or standard moving floor of 120 - 140 cu yd with an automatic roll over sheet. Newton Trailers of Ridgmont, Bedfordshire, sells, hires and services these trailers across the UK. Newton Trailers - the best trailer for bark in the UK.
Newton Trailers' current first choice trailer for the transport of Bark is:
Recommended First Choice Trailer: Knapen Biomass Moving Floor Trailer
Recommended Second Choice Trailers: Knapen Recycling Moving Floor; Knapen Standard Moving Floor
Recommended Sales Options: Automatic Roll Over Sheet; Hydraulic Rear Door; Ultralight Body; Side Doors
Seasonal Hire: Yes - landscaping and garden bark peaks in spring and summer.
TASCC Product: Yes - bark is a permissible load under TASCC rules, so it can be carried in a TASCC-registered trailer.
Product Density: 240 - 300 kgs/m3
Trailer Volume: 120 - 140 cuyd
Region: Sawmills in Scotland, Wales and northern England to customers nationwide
Bark is a sawmill co-product, so there is no separate national tonnage - it follows UK softwood sawmilling.
At 240 - 300 kg/m3 a 29 tonne payload would need 97 - 120 m3, so the biggest Knapen floors carry the most bark per trip.
Bark comes off logs at the sawmill, mainly from softwood mills in Scotland, Wales and northern England. It is screened and graded into landscaping mulch, play-area and equestrian surfaces, soil improvers and biomass fuel.
Because it is so light, bark haulage is pure volume work - and with peat being phased out of horticulture, bark-based growing media are in demand.
A big Knapen floor is the natural bark trailer: maximum volume, light weight and fast horizontal unloading. An automatic roll over sheet is essential to stop fine bark blowing off.
Bark Trailer Option: Automatic roll over sheet. Stops light bark blowing off.
Bark Trailer Option: Hydraulic rear door. Fast unloading.
Bark Trailer Option: Ultralight body. More volume and payload.
Bark Trailer Option: Side doors. Side loading where needed.
A large Knapen biomass, recycling or standard moving floor of 120 - 140 cu yd with an automatic roll over sheet.
A volume load - at 240 - 300 kg/m3 a big floor fills before legal weight.
Yes. Bark is a permissible load under TASCC rules, so it can be carried in a TASCC-registered trailer, with the load and cleaning recorded as part of the trailer's previous-load history.
Yes. Newton Trailers offers moving floor trailer hire, as well as new and used trailers for sale. Call 01525 872466.
A bark floor also carries the other biomass and recycling loads. See our guides to trailers for RDF and glass.
Density, payload and trailer recommendations: Newton Trailers.
Page last updated: September 2026. Newton Trailers - the best trailer for bark in the UK.
| Best Match | Options | Volume | Payload | |
|---|---|---|---|---|
| New | Knapen Lightweight Moving Floor Trailer | 130 CuYds (99.4m3) | 28550kg | |
| Used | 2021 Knapen Biomass Moving Floor Trailer | 140 CuYds (107.0m3) | 27900kg | |
| Also See | New Knapen Lightweight Moving Floor Trailer | 120 CuYds (91.7m3) | 28551kg | |
| Also See | New Knapen Biomass Moving Floor Trailer | 140 CuYds (107.0m3) | 27770kg | |
| Also See | New Knapen Biomass Moving Floor Trailer | 130 CuYds (99.4m3) | 27850kg | |
| Also See | 2015 Kraker Biomass Moving Floor Trailer | 130 CuYds (99.4m3) | 27900kg | |
| Also See | New Knapen Biomass Moving Floor Trailer | 130 CuYds (99.4m3) | 27850kg | |
| Also See | New Knapen Recycling Moving Floor Trailer | 127 CuYds (97.1m3) | 26550kg | |
