Darren Duke
Hi Nicola, It's a tough question to answer without seeing the area in question but the normal way is to fix battening next to either side of the pipes and then cut some 12mm ply to making up a box and then fit over the exposed pipes. Any competent DIY person should be able to complete this work for you but if your looking for something better than just basic then post the job under joiner / carpenter needed. I hope this helps you with your question. Regards, Darren.