Maintaining Your Tennis Court

It goes (almost) without saying that if you look after your tennis court then it will serve you well for many years but of course it is easy to forget to do those little things:

Top Tips:

Do not pull weeds out of the surface as it could damage the structure, treat with a weedkiller and allow to die back.

Avoid pressure washing moss off your court without treating it first with a suitable treatment such as Qualgex.

Avoid planting large trees close to the court which could create shade and therefore encourage moss growth and also cause damage with their root system.

If you do have leaf fall on the court then remove regularly to avoid the build up of detritus.

When your net is not in use please slacken it off to avoid unnecessary tension on the posts.

If you have tennis windbreaks remember to check they are secure if severe weather is forecast.

Maintain the tennis post winder by applying grease.

If you need additional or replacement equipment then either take a look at our shop or contact us.  If you live in Gloucestershire or the surrounding Counties then we offer Construction and Maintenance services.

Grimshaw Celebrating 70 Years

Although the origins of the company go back further, Grimshaw Kinnear was incorporated as a limited company in 1947, trading as a sports-ground contractor with offices originally in Cheltenham’s famous Promenade.  Still in the same family ownership, and now headed by a third generation of the Grimshaw family, the company are highly experienced Civil Engineers carrying out a wide range of Engineering Projects including roadworks, car-parks, drainage, flood alleviation sports and play surfacing and maintenance.

The specialist Sports Division has been building tennis courts and sports/play facilities for 70 years and the company is now thought to be the oldest established tennis court constructor in the UK.  The Lawn Tennis Association recognised the company’s expertise in tennis court construction when it was one of the six UK court constructors invited to become founder members of the Tennis Court Constructors Federation of Great Britain (TCCF) in 1986.  The TCCF has since developed to become SAPCA (Sports and Play Construction Association) which now represents most aspects of sports construction in the UK.  Grimshaws is still an active member of SAPCA and is bound by its codes of practice complying or exceeding the requirements of the LTA/SAPCA Guideline Specifications.

Grimshaws deliberately limit the radius of its Civil Engineering and Construction operations to within approximately a 50 mile radius of Cheltenham to ensure it can maintain a traditional family business service with it’s own experienced workforce.  Customer care is at the core of its trading and it has created a very strong repeat business base alongside new customers.  Many of the long standing tennis court customers have benefited from court maintenance services for several decades.

In 2007 the company diversified to include the on-line selling of sports equipment at based on years of experience in Sports Construction.  This successful division now sells mostly UK manufactured goods throughout the UK as well as exporting to customers around the world.

“We take pride in our family business, working hard to provide a service which combines our extensive experience and highly skilled workforce with a personal service.”  Russell Grimshaw – Director


Harrod UK Goalposts

Rio 2016 Olympics

As an approved supplier we offer the complete range of Harrod UK Sports Equipment.  This includes an extensive range of football goals, rugby posts, hockey goals, netball posts and much more.

If you are not sure which goal meets suits your requirements then we can provide advice based on many years of experience in the field.  Our customers range from large organisations and clubs to the private individual and we are happy to say we have many repeat customers so please do not hesitate to contact us.

Wooden Tennis Posts


If you are looking for something a bit special then take a look at these lovely wooden tennis posts.

They are crafted from oak and finished with three coatings of varnish, brass engraved plates and stainless steel net hooks. • The winder end post is fitted with a heavy duty brass winding mechanism and pulley wheel whilst the anchor end post has a stainless steel hook to capture the loop on the tennis net’s headline wire.

These posts have been supplied worldwide and are used at numerous prestigious clubs including the All England Tennis Club, Queens Club and Stoke Park.

Tennis Court Grit

This semi-loose grit surface is rated by many players as the very best to play on. With the slight give in the surface, it is said that it is like having a well-prepared grass court available for play throughout the year.

With a method of construction pioneered by Grimshaw Sports over 50 years ago, 60% of the grit dressing is bonded to the porous surface to provide grip underfoot. The remainder is left loose to provide a slight degree of “slip”.

An excellent surface for private tennis courts with benefit that it can be “adjusted” to suit your style of play as the proportion of loose grit changes the speed of the play, height of bounce and degree of slip.

Now is a good time to top up your court. The grit eventually becomes too rounded with use and needs to be replaced with fresh angular stones.

These stones are quarried in Wales then shipped to a specialist processor where they are crushed, screened to the required size, washed, dried and bagged then sent on to our warehouse.

Known as ‘Gra Green Grit’ and ‘Grey Green Grit’ simply because of the colour differentiation when wet and dry.  Available here.

Related articles

Clean Tennis Court

If you have a problem with moss and algae on your court then you can buy Qualgex here.

After extensive trials, Grimshaw Maintenance has identified Qualgex as the best product for the surface treatment of hard surface tennis courts and grit tennis courts.


How to choose your Rugby Posts


There are a wide range of rugby posts available varying in height from 5m through to 17m, manufactured from aluminium or steel and erected in traditional sockets or using a hinge system.

If you are just looking for something for the garden then we recommend either the 5m Aluminium Mini Rugby Posts or you would like a combined rugby and football goal then either the Mini Aluminium Gaelic Supergoal available in sizes 3m x 1.83m or 3.66m x 1.83m or the Samba combined Football/Rugby posts.  All of these can be purchased as a single goal.

Larger combination Football/Rugby posts that are suitable for use on sports fields where space is at a premium are also available (HA-FBL-235 senior) or (HA-FBL-236 junior).

When it comes to height, as a general guide 6m, 7m and 9m rugby posts are suitable for schools and junior level club rugby. 10m and 11m are standard club goals. 12m and 13m are premier club level goals and 17m are the ultimate posts. 17m Hinged Millennium Rugby Posts are installed at prestigious venues such as Twickenham, Murrayfield and the Aviva Stadium. Basically the taller the uprights the easier it is to judge whether or not the ball has passed between the posts.

All rugby goals can be purchased singularly and spare/replacement uprights, crossbars, sockets and drop-in-lids are available.

When it comes to deciding whether to go for steel or aluminium rugby posts then the main points to consider are:
– Steel rugby posts tend to cost less than aluminium.
– Aluminium rugby posts are lighter than steel so are easier to install and handle.
– Aluminium has a higher scrap value which can make it more liable to theft.
– Aluminium posts are easier to maintain especially in coastal areas as they are inherently corrosion resistant.

The final consideration is whether to choose socketed or hinged posts.

Socketed posts are the ‘traditional’ type of rugby posts, with the upright sitting directly into the ground socket. The erecting and dismantling of socketed rugby posts should only be undertaken by a suitable number of professionals.

A hinged fixing option enables a safer and easier installation, allowing the posts to be erected and lowered in a slower, more controlled manner. If you already have socketed posts then Hinge Adaptors can be used in order to convert them into hinged posts – please contact us at Grimshaw Sports for details.

To make the process even easier for hinged rugby posts, we offer either a Hinged Post Assembly Roller (HA-RUG-002) designed to be mounted onto an appropriate tractor roll bar using two heavy duty ‘U’ bolt brackets or a Hinged Rugby Post Lifter (HA-LFT-002) which can be fitted on either side of a tractor using the 3-point linkage.

Rugby posts should be lowered to protect them from damage / failure by high winds.

When installing rugby posts, great care should be taken to ensure that sockets are held firmly in place with an appropriate size concrete foundation, as specified by the post manufacturer.

All rugby posts should have post protectors fitted to each upright but this is especially so with hinged posts, as the hinge plate projects beyond the post at ground level. They can be made to suit your specific requirements and can be screen printed with sponsor’s or club name.

Additional items available include, Rugby Platforms, Hinge Security Bolts, Corner flags, Line Marking Machines and Paint.

If you would like to discuss your requirements then please do not hesitate to contact us:      01242 513251

Grimshaw Group as approved by SAPCA


Grimshaw Group is a member of SAPCA – The Sports and Play Construction Association that represents businesses committed to raising the quality standards of all sports, physical activity, recreation and play facilities designed, built and maintained across the UK.

Membership signifies professional competence and performance and as a member you are required to:

• Meet the strict admission criteria
• Construct and install to standards that meet or exceed those detailed in SAPCA Codes of Practice
• Abide by the SAPCA Code of Professional Conduct
• Meet the regular checks on financial stability carried out by Experian

So if you are looking for someone you can trust to carry out Sports Construction in Gloucestershire and the surrounding Counties then please contact us to discuss your requirements.  Whilst we supply our Sports Equipment nationally.

Ruby Post Damage

We can supply spare parts for rugby posts or replacement half or full sets to suit your existing sockets.

We will need to know:
The overall height of the posts (obviously much easier to measure on posts that have fallen over).
Are the existing posts hinged or straight socketed?
Are they steel or aluminium? (will a magnet “stick” to them or not)
What is the external diameter of the posts and the internal diameter of the sockets?
What is the depth of the sockets / the depth that the posts drop into the sockets?

With this information (and the measurements do need to be accurate) we should be able to identify posts to suit your sockets, from all the UK’s leading manufacturers.

For exposed sites that are prone to strong winds we highly recommend hinged rugby posts, as they are much easier and safer to take down and re-erect if storms are forecast, or if pitches are changed to other sports uses through the seasons. If we can identify the manufacturer, straight socketed posts can be converted to hinged with a hinge adaptor (this will involve cutting the bottom off the existing posts).

As always, if you have any questions, please contact us: we are nice and friendly and have been installing Rugby Posts since 1947, so we’ve learnt a thing or two.

Tennis Court Moss

Qualgex is a moss and algae biocide which is suitable for most hard surfaces including macadam and grit tennis courts.  After extensive trials, Qualgex is the product that we chose for surface treatment and can be purchased here.

It is the product that Grimshaw Maintenance use when we are engaged to deep clean hard surface tennis courts.  In Gloucestershire and the surrounding Counties we offer an additional deep cleaning service with our Grime Buster which uses high pressure water and a vacuum system to loosen the dirt in the tennis court matrix before lifting the dirt out.

Qualgex Biocide helps prevent regrowth of moss and algae within the court and whilst large clumps of moss may require a second treatment in order to get the product down to kill the lowest levels of the moss, most smaller moss and algal outbreaks can be hit with one application.  Qualgex is one of the strongest products on the market and is fully registered with the Health & Safety Executive.

All chemicals should only be used in full compliance with their safety instructions and recommendations.

Please contact us to discuss Qualgex Biocide sales and shipping or other Tennis Court Maintenance.