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What's a six tonne spider got to do with jet washing?

We have acquired a reputation for problem solving, especially when it comes to cleaning buildings with tricky access. In truth, we rather relish a challenge – maybe that’s why we get called in.  One Glass Wharf is a good example as it required various specialist access equipment including a six tonne spider!

One Glass Wharf is an award-winning office building located in Bristol's business quarter. The building forms the centrepiece of a major urban regeneration scheme near Temple Meads Station. It has a prominent waterfront location and features a striking undulating terracotta, zinc and glass façade as well as two wall ‘slices’ made of white composite stone. Over time the white stone was becoming increasingly blackened by algae and, since it was critical that this iconic building be kept looking immaculate at all times, the property managers responsible for maintaining the building called us in to clean the stone.


There were a number of unusual challenges associated with cleaning One Glass Wharf. Firstly, a section of the roof is recessed and required specialist access equipment to allow us to reach up to a height of 30 metres and outwards over the roof area, something that is quite tricky to achieve. In addition to this we needed to set up access equipment in an extremely restricted space - a narrow alley that runs between the two stone walls – in order to reach certain sections of the walls.


We use a lot of different types of access equipment to reach the places other jet washing companies can’t (or don’t want to!). This includes various mobile elevated work platforms (MEWPs); scissor lifts, cherry pickers, spider lifts and boom lifts including articulated knuckle booms and telescopic (straight) booms. We have both the knowledge and the experience to assess a project and select the most appropriate access equipment to allow us to get the job done efficiently and safely. Plus we are accredited IPAF operators and our team is fully trained in the safe use of mobile access towers (PASMA).


For One Glass Wharf we used a truck mounted platform with an articulated boom to access the front of the building, while a compact six tonne spider crane was neatly located in a narrow alley way to allow us to reach the required height on the side of the wall ‘slices’. Our SteamPLUS system is ideal in these circumstances; it does not lose power, even at 32 metres, whereas most other cold water jet washing systems certainly would. It also allows us the power and control required to achieve the highest standards of cleaning.  

Even though we knew that SteamPLUS would be perfect for this type of substrate, we still carried out a test clean on a small area of the white stone slice to demonstrate what we could achieve prior to undertaking the job. After cleaning we applied an approved biocide prohibitor to the surfaces to protect the stone and help slow down algae regrowth.

One Glass Wharf looked brilliant once we had completed the clean. Will Mellor of Capital Properties was delighted with the outcome. He said, “ I was amazed by the brilliant work that Max and his team did on One Glass Wharf. They overcame some tricky access challenges to complete the task and the building now looks as good as new. We will certainly be using OneFifty again.”

For more information about our jetwashing services contact Max or Andy Morris on 0333 234 1445 or email

View all case studies >

Associated Case Studies

Our system works its magic on wood, brick, render and cement. r .

St George's Heights is a modern apartment block located in Redfield, in South Bristol. The building façade is made up of four different substrates; wooden cladding, brick work, cement and K Rend render. Each of these surfaces requires a slightly different method of cleaning which was no problem for our cleaning system.

Read full case study

Fairfield High School

We were contacted by the caretaker of Fairfield High School, Bristol. The school had very large quantity of organised, but now tired looking, graffiti art covering a very prominent wall. The caretaker required the wall to be stripped of paint and brought back to its original condition.

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Quick and convenient cleaning for fast food favourite - McDonald’s

We carry out out regular jet washing for McDonald’s restaurants. This usually involves cleaning the outdoor seating areas, coral patios and drive-thru areas, however recently we also cleaned the roof of their Melksham restaurant.

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Some of our clients


Client Testimonials

“It is refreshing to work with such a dynamic, enthusiastic and reliable team.”

Adam Coombs - Regional Director, Hillcrest

“They did a really great job of cleaning the high-level cladding on the building. I know that they offer a range of cleaning services and I will definitely be using them again in the future. ”

Christopher Haswell - Project Manager - Maddox Construction

“Their work is excellent – I recently visited a building that they cleaned for me 18 months ago and it still looks brilliant.”

Daniel Boyle - MD of Relyon Services

“As always OneFifty got the job done with no fuss. They’re our go-to supplier for exterior building cleaning.”

Mark Sheffield - Contracts Manager - Jones Building Group

“Your pressurised hot water system transformed the appearance of our outdoor wooden decking.”

Gary - Lockside Restaurant

“Please pass on my sincere thanks to guys for the demo and for getting Neptune cleaned.”

Wendy Tomlinson - Senior Conservation Officer, Cheltenham Borough Council

Our Accreditations