Buckinghamshire Landscape Gardeners
  • Home
  • Landscaping
    • Decking
    • Driveways
    • Patios
    • Fencing
    • Turfing
    • Planting
  • Design
    • Landscaping Ideas
  • Resources
    • Garden products
    • Privacy Policy
  • News
  • Contact
    • landscaping apprenticeship jobs buckinghamshire
    • landscaping labourer jobs buckinghamshire
  • Home
  • Landscaping
    • Decking
    • Driveways
    • Patios
    • Fencing
    • Turfing
    • Planting
  • Design
    • Landscaping Ideas
  • Resources
    • Garden products
    • Privacy Policy
  • News
  • Contact
    • landscaping apprenticeship jobs buckinghamshire
    • landscaping labourer jobs buckinghamshire

How much does a slate patio cost?

2/18/2023

0 Comments

 
How much does a slate patio cost to install
This article contains affiliate links


Slate is a durable natural stone very suited to paving and patios. Geologic processes and forces have taken millions of years to form this extremely dense natural stone.

One of the greatest advantages of slate paving is it is impervious to water penetration. This has historically led to slate being utilised for damp proof courses and roofing materials.

Being a metamorphic rock its strata has been compressed within a linear grain. This makes it easy to split into flat sheets perfect for surfacing materials. Furthermore, slates natural smoothness makes it look extremely contemporary.

This is especially so with slate paving with darker shades of grey and black. These bold colours can create fantastic contrasts with surrounding landscaping such as walls and lawns. Consequently, I will investigate how much the average slate patio costs in the UK.

In this article our case study found that:
​

The average cost of Slate paving installation in the UK is £142.74 per m2 

The average cost of Slate paving installation in the UK 'labour only' is £65.00 per m2 

The average cost of Slate paving in the UK 'materials only' including waste is £77.74 per m2



​Below will list and summarise the variables as well as conduct a 50 square metre slate patio case study. If you want to know how much a slate patio costs, you have come to the right place!

Are slate patios expensive?


Like any heavy construction slate paving is expensive due to cost of heavy building materials, waste disposal and skilled, labour.

Landscaping and paving companies also have to factor in more risk than other trades. A week of bad weather can destroy any hope of staying on schedule or making profit.

​Therefore the profit and risk margin on paving projects is typically sizable. 
​
Slate patio Chesham
One of our slate patio projects in Chesham, Buckinghamshire
Slate patios are also expensive because most developed economies have huge skills shortages. For years western countries have focused the education system around academic subjects.

The media have portrayed builders and other trades as from lower social classes. This has led to a serious decline in recruitment for physical trades.

​Consequently labour rates for trade’s people have risen significantly in the past decade.  

Materials


​It’s surprising how many tons of heavy materials need to be shifted to correctly build a patio. Patio materials such as paving, sand, cement and sub-base aggregates are heavy and expensive.

Not only are they expensive to buy they require strong labour to move them around. When assessing slate paving quotations it is good to ask for a detailed works description.

This way you know exactly what you are paying for with no scrimping on base-work. On average slate paving is around £50 per square metre to buy with delivery. 
​
Patio base

Waste

​
Another cost when building a slate patio is removing waste from site. This normally comes in the form of excavated, soft, ground.

To build a patio correctly you will need to remove this soft topsoil layer. Excavating a depth of 150mm will allow you to install a robust and well compacted sub-base. Soil dig out will typically be removed from site by grabs and skips. 

Labour


For many decades there have been a declining number of young people learning skilled trades. This has led to one of the biggest construction skills shortages in history.

Education systems have focused too much on academic studies which do not suit all students’ abilities. The result has been a dramatic rise in the cost of skilled labour.

Very often, clients assume that manual workers will be cheap. However this is certainly not the case anymore! 
​
Slate pathway
One of our Slate patio projects in Harrow, Greater London
The amount patio builders charge varies greatly upon different variables. The first being geography, in the UK the highest labour rates will be found in London. 


However in regions with less wealth and demand rates will be lower. Supply and demand will also play a part in what you pay. 


Contractors with great reputations can be booked up months in advance! Such tradesmen can command higher day rates. 

Slate patio Watford
One of our slate patio and landscaping projects in Watford, Hertfordshire
However, careless contractors who are difficult to deal with will have less demand. Therefore they will normally have to charge less.

There are always exceptions to the rule but on the whole this scenario is true. Patio layers can earn anywhere from £150 - £350 depending upon location, reputation, efficiency and client base.

​However, the most typical rate I see for good self employed contractors is £250 per day. 

A price case study for a 50 square metre Patio


Not all slate paving quotations are the same; many clients think a cheap quotation is ‘good value’. However, a cheap quotation usually means scrimping on essential sub-base materials and specification.

Consequently, I have listed a works description of what is being priced for within the case study below: 


  • Excavate out the ground to a depth of 150mm below the finished level.
  • Supply and spread a 100mm layer of compactable Mot Type 1 and compact with a compaction plate.
  • Supply and lay the slate paving of choice on a consistent mortar bed of 40mm. The mortar will be mixed from 1:4 cement and sharp sand mix.
  • When paving is set, joint paving with 3:1 plastering sand and cement mortar mix.​
  • Leave site clean and tidy

Table costs based upon a 50 square metre slate patio

No    
​Item
Specification ​
​Unit cost
​Total cost
​2 ​
​6 Yard skip
7.5 cubic metres soil
​​£250
​​£500
​​8
​​Mot Type 1
​​8 tones loose
​£50
​£400
​​4
​Sharp sand
​​850kg jumbo bags
​​£65
​​£260
​24  ​
​​Cement
​25kg plastic bags
​£8
​£192 ​
​​50
​​Slate
​​1m2
​​£50
​£2,500 
​​1
​Cement mixer ​
​​1 week hire
​£35
​£35
​​1
Labour   ​
​1 man 13 days
​​£250
​​£3,250
​
0
0
​Materials total:
£3,887.00
​
0
0
​Grand total:
​£7,137.00
Therefore the average cost for a 50 square meter Slate patio is £7137.00. That is £142.74 per m2 if you use a contractor.

If you build it yourself, the materials will cost £3,887.00. That’s £77.74 per m2. 

Extra costs for slate patios

​
​Very often with patio projects there can be extra costs and sub-projects other than the paving itself. These can include re-levelling, clearances, drainage, drain covers, retaining features and steps. Such extras can add extra cost to the standard laying of the paving.

Manhole covers

​
​It is not unusual for a new patio to fall upon an existing drain or inspection cover. These typically will add extra cost to your patio.

The effect on price will depend on the level of extra work needed. Normally new patios will have a change in level from the existing surface. This means a new cover will have to be set flush with the new patio.

It is normal to install a recessed paving cover so you do not notice it. These do take a little time and skilled cutting to install correctly.

​The average manhole cover installed to a new patio can cost between £150-£300 including materials and labour. If you wish to install a recess manhole yourself why not read our step by step guide.
​
Slate paving manhole
One of our recessed manholes using slate in Buckinghamshire

Patio drainage

​
​A very important consideration of a new patio is implementing a drainage strategy. This is because it is very common for new paving to accelerate storm water runoff.

Consequently, it is a good Idea to add patio drainage to eliminate the risk of flooding. New patios are not allowed to discharge runoff into the existing drainage network. Therefore you need to give water somewhere to drain so it can be absorbed by the ground.

The most typical way of doing this is by excavating and installing a soakaway. A series of grated channel drains can then be laid within the paving to capture the water.

​This can then be plumbed into the drainage soakaway. It is very difficult to guess the cost of patio drainage as there are many variables.

​However for a 50 square meter patio with drainage gulley’s plumbed into a soak-away would cost around £2,000.00  
​
Patio drainage

Steps

​
It is very common for a new patio to be an uncomfortable height from your door ledge. Therefore installing a patio step is quite a common occurrence.

The size and complexity of your steps will depend upon your specific situation. However, a single step up is the most common type of patio step.

Such a step the size of two regular slabs would normally cost around £250 to install.

Retaining structures


​One of the largest hidden costs of a new patio is level changes. If your existing site is particularly uneven or sloping you may need to install retaining walls. 

Such structures require excavation to the correct specification to prevent subsidence. The cost of retaining structures will vary depending upon your specific project. However, these will usually require excavation, concrete foundations and the building of retaining walls.

Retaining walls have to be built strong and robust to retain heavy loads. This requires large quantities of materials and costly, skilled labour to execute. It is impossible to provide a rough cost for retaining features as there are so many site variations.

However, I have written some costing guides for garden levelling and retaining walls below.
​
How much does a garden retaining wall cost?


How much does it cost to level a garden? 
​
Slate patio

Making good 

​
One of the unforeseen consequences of building a new patio is the mess it creates. Many go to the trouble of installing paving and end up destroy the lawn in the process!

​There will normally be a need for making good around the new patio and marrying in levels. However a competent contractor would have factored this in to their original budget. 
​Thank you for reading our article on how much does a slate patio cost. If require patio or paving services please do not hesitate to contact us. Below I will link to some other relevant articles you may find informative. 
Contact us
Picture
Picture
Picture
Picture
Picture
Picture


'As an Amazon associate I earn from qualifying purchases'
0 Comments



Leave a Reply.

    Picture

    The
    ​Author 

    Paul Nicolaides 
    BA (Hons) Dip

    Paul Nicolaides has over 30 years of recreational gardening and 20 years of professional landscaping experience. He has worked for landscape contractors including design and build practices across London and the South East. In 2006 he qualified with a BA Hons degree and post graduate diploma in Landscape Architecture. In 2009 he founded Ecospaces an ecological landscaping practice which aims to improve social cohesion and reduce climate change through landscaping. In 2016 he founded Buckinghamshire Landscape Gardeners which designs and builds gardens across Buckinghamshire and the South East. This blog aims to provide easy problem solving information to its audience and encourage others to take up the joy of landscaping and gardening. 
Proudly powered by Weebly
Photos used under Creative Commons from graibeard, UK Prime Minister, Maggie Hoffman, Aaron Volkening, Darlene Roelofsen, David Paul Ohmer, denis.zabin, Permaculture Association, Bill Selak, The fixed factor, The Garden Smallholder, Tauralbus, nan palmero, Lee Cannon, Monkeystyle3000, Darlene Roelofsen, nicolas.boullosa, Bryn Pinzgauer, cattan2011, Center for Neighborhood Technology, Matthew Paul Argall, tdlucas5000, Acabashi, Ronald (Ron) Douglas Frazier, Gilles Gonthier, Martin Hesketh, Owen P, alljengi, steve p2008, romana klee, Bennilover, *_*, blumenbiene, Julianna, Daryll90ca, Wendell Smith, Acabashi, Decorative Concrete Kingdom, Permaculture Association, MizGingerSnaps, Tjflex2, wuestenigel, travel oriented, Aaron Volkening, shixart1985, SupportPDX, pete. #hwcp, MostlyDross, Local Food Initiative, Ronald Douglas Frazier, Torquay Palms, Oregon State University, perfectgrassltd, aarongunnar, Acabashi, Actual Brian Crawford, jeans_Photos, alh1, Darlene Roelofsen, Rromani from Romania, docoverachiever, tawalker, markfountain52, Maria Eklind, treegrow, deckerme, Kevan, richardghawley, Ivan Radic, Mark Wordy, garryknight, Matt Lavin, greger.ravik, Capt' Gorgeous, LWT Gunnersbury Triangle, Wonderlane, Rudi1976, stonescape, Dinesh Valke, troutcolor, Acabashi, Juhele_CZ, Darlene Roelofsen, pikkuanna, tdlucas5000, Jocey K, Acabashi, focusonmore.com, BethinAZ, zoetnet, kurt.stocker, Monkeystyle3000, ell brown, Bryn Pinzgauer, Mark Wordy, infomatique, Linda N., Armcon Precast, Tinkers Moon, AnnSophieQ, mikecogh, Bob Klannukarn, Aiko, Thomas & Juliette+Isaac, ChrisHamby, Alessandro_Corsoni, Stiller Beobachter, GLVF, denisbin, MizGingerSnaps, garryknight, goforchris, Dick Thompson Sandian, Paul Comstock, Kelowna09, Decorative Concrete Kingdom, Kanesue, BlossomPDX, Wonderlane, alh1, PAUL (Van de Velde) -Fotografie, Paul and Jill, Gilles Gonthier, katunchik, thinkactlove, gidlark, jugreen_de, Henry Hemming, Ivan Radic, tompagenet, corsi photo, www.to-tuscany.com, Mark Wordy, UC Davis Arboretum & Public Garden, Aaron Volkening, Mark AC Photos, Peter O'Connor aka anemoneprojectors, arripay, denisbin, alans1948, wallygrom, Frank.Vassen, alh1, Scottb211, LenkinDesign, wallygrom, Mike Bonitz, Aaron Volkening, juliamaudlin, dwblakey, Jocelyn777 Love Europe, HerryLawford, mikecogh, jeans_Photos, Corey Leopold, Jeremy Levine Design, Kaibab National Forest Photography, Ciarán Mooney, onnola, 35mmMan, longlabcomms, nc.hort, Jamiecat *, pom'., Puddin Tain, Acabashi, tompagenet, Loz Flowers, Alan Stanton, Darlene Roelofsen, denisbin, Darlene Roelofsen, zakzak7, Center for Neighborhood Technology, wht_wolf9653, LenkinDesign, HerryLawford, FoodCraftLab, Miranda J Wood, Key West Wedding Photography, Montgomery County Planning Commission, bienen-nachrichten.de, zaphad1, SupportPDX, Ronald (Ron) Douglas Frazier, itmpa, Judy Gallagher, SteveR-, kylehase, simonmgc, treegrow, garryknight, Peter O'Connor aka anemoneprojectors, el cajon yacht club, cattan2011, Ed Bierman, mikecogh, Mike Prince, photofarmer, M. Martin Vicente