Our Services

how can we help?

Corinium Arb work across Gloucestershire and beyond, providing tree care services to both residential and commercial clients.   We also offer contract maintenance services, where we work around your schedule to minimise disruption. 

Our tree care specialists are fully trained with over 30 years of combined experience in the arboriculture field.  We consider Health and Safety to be of utmost importance, which is why all work is preceded by a site survey and risk assessment.   

As we work, we will keep your property as tidy and clean as practicable, removing any tree debris and trip hazards.   At Corinium Arb we work as a team making sure we work safely together.  

As a professional tree care business, we hold Public Liability Insurance of up to £5,000.00.  Should you like to see our certificate of insurance, please just let us know prior to our visit.

Planning application for tree works

Under the UK planning system, Local Planning Authorities (LPA) have a statutory duty to consider the protection of trees under several specific provisions.  Work required on trees covered  by Tree Protection Orders (TPO) or otherwise located within Conservation Areas  (CA), will need the approval of the relevant LPA. 

Notice of work is not required for tree in a CA less than 7.5 centimetres in diameter, measured 1.5 metres above the ground (or 10 centimetres if thinning to help the growth of other trees).

The approval of the Forestry Commission (FC) may be required for specific types and levels of work that require felling licences.  However, a felling licence is not required to fell trees within private gardens.  

Decisions on proposed tree works are usually made within six weeks of the application.  

Tree Pruning & Cutting

Tree pruning and cutting may be necessary to maintain a tree in a safe condition, to remove dead branches, to promote growth, to regulate size and shape or to improve the quality of flowers, fruit, or timber.

Pruning for tree health centres upon removing dead, dying and diseased branches, branches chafing together and any damaged branch stubs.   Reducing the volume of the canopy, to increase the amount of light and air filtering through the tree crown, encourages increased foliage while reducing the risk of disease. 

sectional felling & dismantling

Sectional felling and dismantling is the process of systematically deconstructing a tree piece by piece.  The tree surgeon will climb the tree to access all the branches to be removed. 

Sectional felling or dismantling is the process of removing a tree using aerial operations (working off the ground).   Such work may be necessary for many possible reasons, including limited space in the surrounding area, construction, or landscaping purposes, or simply for the health of the tree.  

The tree will be de-constructed by use of ropes to lower one branch at a time.  If space and safety considerations allow, some sections can free-fall to the ground. 

A Mobile Elevating Work Platform (MEWP) may be used when the tree is unsafe to climb.  In this event, ground conditions will be assessed by a competent person to ensure the stability of the machinery. Operators are required to be trained and hold the relevant certification of competency in the use of a chainsaw from a MEWP.

hedge trimming

Hedges can easily become overgrown or neglected.  Routine work, at least once each year, should be carried out to keep hedges in an optimal condition.

It is important to keep hedges correctly managed.  New hedges require formative pruning for their first couple of years after planting and is usually carried out in winter or early spring.

After this, maintenance trimming is carried out, usually once a year for informal hedges and twice a year for formal hedges. Some formal hedges may need three cuts a year. Maintenance trimming is generally carried out between spring and summer. 

The timing of any pruning should take account of the potential for nesting birds, usually by delaying hedge works until after the nesting season – considered to run from March to August – if there are any signs that indicate nesting activity. 

stump grinding

This process removes the stump of a tree, while leaving the main root system in situ.  The stump can be ground out to a level above or below the surface of the ground.

Stump grinding mechanically processes the stump of a tree without removing the main root structure. Stumps can be ground down to a pre-determined height either above or below ground level. 

The resultant grindings have a form like chain saw arisings and can decompose usually within a season.  As such, grindings can be left in situ to mix eventually with the soil, thus eliminating the need for any infilling .

If the stump is infected (especially with honey fungus), all arisings should be disposed of in accordance with Government regulations. 

The risk of damaging a service utility installation (e.g., electricity/gas/drains) should not be underestimated.  Use of detectors and close visual inspections should form part of any pre-works surveys.

woodland management

Woodlands needs space and light to grow effectively.  By removing dead, diseased, or weak specimens, and by shaping trees to remove unwanted branches, woodlands will be retained in a healthy and controlled re-generative condition.

Woodlands vary greatly depending upon the dominant tree species making up the wood and the spacing between individual trees. These two factors will determine the amount of light penetrating through the main leaf canopy and reaching the woodland floor. Increased light levels beneath trees helps to generate the right conditions to encourage a greater variety of woodland plants. 

There are some examples where unmanaged woodland benefits one or two species or species groups, such as bats or fungi.  Overall, however, biodiversity, together with many woodland specialist species decline significantly in neglected and unmanaged woodlands.

tree felling

Felling a tree is the process of causing a tree to fall down in a professional and safe practice.  This will require space to fall and be handled in a specific way.

Tree felling is the process of allowing the entire tree structure to fall to the ground when there is sufficient space in a designated direction.  Each tree and surroundings will have unique features, which should be fully assessed within a Safe Method Work Statement.

crown thinning

Crown Thinning is the removal of a portion of smaller/tertiary branches, usually at the outer crown, to produce a uniform density of foliage around an evenly spaced branch structure.  Crown thinning does not alter the overall size or shape of the tree. 

crown lift or crown raising

Crown lifting is the removal of the lowest branches.    Crown lifting is an effective method of increasing light transmission to areas closer to the tree or to enable access under the crown.  Such works should be restricted to less than 15% of the live crown height and should leave the crown at least two thirds of the total height of the tree.

Crown lifting should be specified with reference to a fixed point, such as ‘crown lift to give 5.5m clearance above ground level’.

crown reduction

The term ‘Crown Reduction’ relates to the process of reducing the height or the spread of the crown, or both. Usually, such reductions should be no more that 15-20% of the original size of the canopy. 

Crown reduction may be used to: decrease the mechanical stress on individual branches or the whole tree; make the tree more suited to its immediate environment; or to minimise the effects of shading, loss of light loss, or other environmental considerations. The result should retain the main framework of the crown, while leaving a similar, although smaller outline. 

Reductions should be specified by actual measurements, where possible, and reflect the finished result.  Not all species are suitable for this treatment, and crown reduction should not be confused with ‘topping’ (more than 20% reduction in crown size), which is usually regarded as an indiscriminate and harmful treatment.