Dutch Lap Siding
Dutch Lap Siding standard pattern profile
Unit stack of Dutch Lap Siding
Dutch Lap Siding which is also known as COVE Lap and GERMAN Lap and simply pattern "105" by WWPA (Western Wood Products Association)
is distinguished by its curved "reveal" or channel between the installed boards. From a distance it gives a slightly rustic "log" impression.
Dutch Lap Siding has 3/8” overlap with a 1 1/4” curved recessed edge.
The Dutch Lap pattern provides excellent weather protection and installs with a minimal
amount of effort and material wastage.
Dutch Lap siding is normally supplied in unseasoned knotty grades with a saw textured face side.
Commonly available sizes are 1x6", 1 x 8" and 1 x 10".
Dutch Lap Incense Cedar Siding - Tahoe CA
WRC Dutch Lap Cedar Siding up close
DUTCH Lap has a rustic appearance and from a distance gives a slightly "log" cabin impression. Dutch Cove Lap is an option many people use when the cost of cedar logs is out of the budget.
The following California customer selected Incense Cedar milled to a 1x8" Dutch Lap pattern then factory finished with Duckback Cedar Natural Semi-Trans Stain.
Incense Cedar 1x8" Dutch Lap pattern factory finished with Duckback Cedar Natural Semi-Trans Stain
Dutch Lap Pattern Profile
There is only one standard Dutch Lap pattern profile.
The overlap between boards (E) is usually 1/2" leaving approximately a 1" curved channel (F) revealed between. The overlap and channel width can be custom modified - sometimes ;-)
Dutch Lap Siding TRUE Measure
You might be wondering why our Buffalo diagram above has letters - A, B, C - instead of actual measurements. That is because siding measurements can vary from
mill to mill and lumber yard to lumber yard. Using letters allows us to confirm the TRUE dimensions with the mill before we sell to our customers.
NOMINAL SIZES are for industry identification only. Even though a pattern is called 1x6" or 1x8" that does not mean it measures 1 inch thick nor 6 or 8 inches wide.
Nominal 1x6, 1x8 refers to the size before the pattern profile is milled and NOT the board's final finished or "dressed" dimensions.
A 1" NOMINAL is usually 11/16ths inch thick. A 6" NOMINAL dutchlap pattern is usually 5 3/8 - 5 1/2" wide including the overlap which results in 4 7/8 - 5 1/8 inches of exposed face depending on lap depth.
An 8" NOMINAL dutchlap pattern is usually 7 1/8 - 7 1/4" wide including the overlap which results in 6 5/8 - 6 7/8 inches of exposed face depending on the lap depth.
This is called the pattern's "exposure" - the visible part of the board when installed on your wall.
Read our Dutch Lap SQFT to LFT Coverage and "Buyer Beware" warning to make sure you ask
the right questions BEFORE you BUY.
Western Red Cedar Dutch Lap aka German Lap and Cove Lap installed close-up
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DUTCH LAP SQFT LFT Coverage
Dutch Lap siding is often sold by the linear (or lineal) foot. To figure out how many linear feet (LFT) you need you must multiply the square
foot area you plan to COVER by a linear factor based on the pattern width you have selected 6", 8", or 10".
The Lineal Foot Factor is derived by dividing 12 inches by the individual pattern's "exposed" face - the width that is
still visible after the siding boards are installed.
A) Calculate the square footage in walls: length x height = sq. ft.
B) Calculate, and then subtract, the square footage of openings
C) Add 10% to cover trim and waste = SQFT needed
D) Multiply SQFT result by the linear factor = LFT needed
BUYER BEWARE WARNING: The actual "dressed" widths and "Exposed Face" measurements below are suggested based on our
experience in the industry.
HOWEVER individual mills often have their own pattern standards
which vary from the norm. When you get ready to buy be sure to ASK for the exposed width to make sure you are
buying enough to complete the job!
DUTCH LAP Siding Coverage Factors*
|Nominal Width||Dressed Width||Exposed Face||Linear Ft Factor|
|6" ||5 3/8" ||4 7/8" ||2.46|
|8" ||7 1/8" ||6 5/8" ||1.81|
|10" ||9 1/8" ||8 5/8" ||1.39|
* assuming 1/2" board overlap
Example of 1x8" Pattern Coverage estimation: If you are siding four walls 8 feet high by 40 feet long with 8" wide DUTCH LAP
boards and you allow 10% of the total square feet for openings, you would need approximately 2300-2350 linear feet:
SQFT AREA: 4 * 8 * 40 = 1280 SQ FT - 128 (10% openings) + 115 (10% trim/waste) = 1267 SQ FT
8" Dutch-lap Pattern: 1267 SQ FT * 1.81 linear factor = 2293.3 LFT
Dutch Lap Cedar Siding boards
Dutch Lap boards primed & Painted ready for shipping
Check out what one of our favorite customers Edwin did when he decided to renovating with
Dutch Lap STK (Mill Select) Western Red Cedar Siding. The Design started out as a horse barn with a 2 bedroom apartment built on the 2nd floor.
Edwin had been planning to build new structure
when a friend said "you could renovate this barn into
something pretty nice if you wanted" ...Dutch Lap Home in Georgia
1x8" Western Red Cedar Dutch Lap factory finished with a "Cedar Natural" Semi-Trans Stain - Home in Georgia
Help Us Answer Your Questions
Because we are committed to answering every request, our phones ring off the hook. In order to make sure you get the attention
you deserve, we ask that you help us help you.
When you call our toll free line you will be asked a few questions to confirm if we can truly help with your project.
If it looks like we can we will set up project consultation with a sales expert.
This a 15 minute free consultation. If our products and services are a good project match, we will also give you a verbal "ball park" price and total cost estimate
to help you plan your project costs.
BEFORE we can give you a Ball Park Price we will need to know the approximate square feet required and the
Ship to location (city, state, zip). This information is used to make sure everyone who makes an appointment
receives the advice and customer service we have promised. Your information will not be shared or sold.
1x8 Dutch Lap (Cove Lap) Red Cedar Siding Stained Olympic 716 "Cedar Natural" - Cabin in Ohio
CONTACT Buffalo Lumber
ABOUT Buffalo Lumber
1x8 Dutch Lap (Cove Lap) Western Red Cedar Siding Stained Olympic Maximum 905 "Cinder" - Rustic Home in Maryland
1x6 Dutch Lap (Cove Lap) Incense Cedar Sided Barn in North Carolina
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| BEV || Beveled |
| BEV || SDG Beveled siding |
| BS || Both sides |
| CB || Center Beaded |
| CB1S || Center bead one side |
| CB2S || Center bead two sides |
| CG || Center groove |
| CG2E || Center groove two edges |
| CLG || Ceiling |
| CM || Center matched |
| CS || Caulking seam |
| CSG || Casing |
| CV || Center Vee |
| CV1S || Center vee one side |
| CV2S || Center vee two sides |
| D2S || Dressed two sides |
| D4S || Dressed four sides |
| DB || CLG Double-beaded ceiling |
| DB || PART Double-beaded partition |
| DBL || T&G Double tongued & grooved |
| D&CM || Dressed & center matched |
| DKG || Decking |
| D/S,DS || Drop Siding |
| D || S/L Double shiplap |
| DVJM || Double vee-jointed matching |
| D&M || Dressed and matched |
| E || Edge |
| EB1S || Edge bead one side |
| EB2S || Edge bead two sides |
| E&CB2S || Edge & center bead two sides |
| EV1S || Edge vee one side |
| EV2S || Edge vee two sides |
| E&CV1S || Edge & center vee one side |
| E&CV2S || Edge & center vee two sides |
| EE || Eased Edges |
| EG || Edge (vertical) grain |
| EM || End matched |
| EV || Edge vee |
| FE || Feathered edge |
| FG || Flat (slash) grain |
| FLG || Flooring |
| F&G || Feathered & grooved |
| G1E || Grooved one edge |
| HB || Hollow back |
| MG || Mixed Grain |
| N || Nosed |
| N1E || Nosed one edge |
| N2E || Nosed two edges |
| OS || One side |
| PAT || Pattern |
| P1E || Planed one edge |
| P2E || Planed two edges |
| P1S || Planed one side |
| P2S || Planed two sides |
| P4S || Planed four sides |
| P1S1E || Planed one side one edge |
| P2S1E || Planed two sides one edge |
| P1S2E || Planed one side two edges |
| PAR || Planed all 'round |
| PART || Partition |
| PE || Planed edge |
| PPE || Planed plain edge |
| PSE || Planed square edge |
| PSJ || Planed and square jointed |
| PTG || Planed tongued and grooved |
| R&B || Rabbet & bead |
| R/F || Resawn/Rough Face |
| Rabbeted || Bevel siding with rabbet (notched cut) on bottom edge |
| S || Side, Surfaced |
| SB1S || Single bead one side |
| SDG || Siding |
| SG || Slash (flat) grain |
| S/L, || or SL Shiplap |
| SQ || Square |
| STPG || Stepping |
| S&E || Side & edge (surfaced on) |
| S1E || Surfaced one edge |
| S2E || Surfaced two edges |
| S1S || Surfaced one side |
| S2S || Surfaced two sides |
| S4S || Surfaced four sides |
| S1S&CM || Surfaced one side & center matched |
| S2S&CM || Surfaced two sides & center matched |
| S4S&CS || Surfaced four sides & caulking seam |
| S1S1E || Surfaced one side one edge |
| S1S2E || Surfaced one side two edges |
| S2S1E || Surfaced two sides one edge |
| S4SEE || Surfaced four sides eased edges |
| T&G || Tongued and grooved |
| TG&B || Tongued, grooved, and beaded |
| TG&V || Tongued, grooved, and vee-jointed |
| T1E || Tongued one edge |
| UE || Unedged |
| V2E || Beveled V on two Edges |
| V4E || Beveled V on four Edges |
| VG || Vertical grain |
| VJM || Vee-joint matching |
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