| Author |
Message |
Dewayne Dean
Senior Member
Username: ddean
Post Number: 32
Registered: 02-2016
| | Posted on Friday, April 08, 2016 - 12:57 pm: |    |
In our Casework Spec, we can choose between a Combination Core and a MDF Core.
Are intent is to provide a "Premium" cabinet for our client.
Are either of these two cores more "Premium" than the other?
Thanks |
George A. Everding, FCSI, CCS, CCCA, AIA
Senior Member
Username: geverding
Post Number: 825
Registered: 11-2004
| | Posted on Friday, April 08, 2016 - 01:40 pm: | |
Are you using the Architectural Woodwork Standards (AWS) from AWI? That should differentiate between Economy, Custom and Premium standards. |
Ronald L. Geren, FCSI, AIA, CCS, CCCA, SCIP
Senior Member
Username: specman
Post Number: 1393
Registered: 03-2003
| | Posted on Friday, April 08, 2016 - 01:46 pm: | |
If I'm reading the Architectural Woodwork Standards (AWS) correctly, for "Premium" grade sheet products the core is at the option of the shop unless the specifications identify a specific core material.
A combination core uses waferboard or OSB, and a composite core uses MDF or particleboard.
Per the AWS, MDF has a better edge than a combination core, but a combination core has better screw holding and bending strength performance. The AWS also states that a combination core has limited availability, whereas MDF is readily available.
Ron Geren, FCSI, AIA, CCS, CCCA, SCIP
www.specsandcodes.com |
J. Peter Jordan
Senior Member
Username: jpjordan
Post Number: 892
Registered: 05-2004
| | Posted on Friday, April 08, 2016 - 03:50 pm: | |
It also depends on the finish. the "combination core" may be OK for plastic laminate, but I would be surprised if it would be appropriate for wood veneer.
J. Peter Jordan, FCSI, AIA, CCS, LEED AP, SCIP
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Dewayne Dean
Senior Member
Username: ddean
Post Number: 33
Registered: 02-2016
| | Posted on Monday, April 11, 2016 - 10:44 am: | |
Thanks for the comments |
Anne Whitacre, FCSI CCS
Senior Member
Username: awhitacre
Post Number: 1409
Registered: 07-2002
| | Posted on Tuesday, April 19, 2016 - 08:30 pm: | |
I think you want the MDF core throughout - you may not notice the difference for the plastic laminate face, but you will notice it for the interior face, and at the edge. |
Ashley Goodin
New member
Username: agoodinawinetorg
Post Number: 1
Registered: 05-2016
| | Posted on Friday, May 06, 2016 - 04:45 pm: | |
From the perspective of AWI, both MDF and Particleboard are equally acceptable for casework construction. You can look at the table 04-007 on pp. 74 of the AWS Edition 2, 2014 for relative comparisons. One issue to note, doors and drawer fronts constructed of lumber core, veneer core, or OSB will not be guaranteed against warping or delamination per the standards. Please feel free to contact me if I can be of further assistance. - Ashley Goodin, AWI Technical Services Manager |
Dewayne Dean
Senior Member
Username: ddean
Post Number: 39
Registered: 02-2016
| | Posted on Monday, May 09, 2016 - 10:18 am: | |
I have Edition 1 2009. Where would this table be located? |
Mitchel Taylor, CSI, CDT
New member
Username: oscardeuce
Post Number: 1
Registered: 05-2016
| | Posted on Monday, May 09, 2016 - 11:20 am: | |
When comparing MDF and Particleboard, it's important to consider the grade. The lower grade of MDF, Grade 115, is not better than Grade M-2 Particleboard as far as screw holding and strength are concerned, while Grade 130 MDF has similar screw holding values with a higher Modulus of Elasticity and Modulus of Rupture. Grade 155 MDF is substantially stronger than Particleboard, with greater screw holding power as well.
Combination core panels most often use veneer core plywood for the core (OSB or other materials are sometimes used as well), with MDF for the face layers. This provides a stronger product while keeping a smooth face that is suitable for veneer or laminate. However, it shares regular veneer core plywood's susceptibility to warping.
The table referenced in the AWS is on page 457 in the appendix of the first edition (2009). Mitch Taylor, Woodwork Institute DAS |
Dewayne Dean
Senior Member
Username: ddean
Post Number: 41
Registered: 02-2016
| | Posted on Monday, May 09, 2016 - 11:24 am: | |
Thanks for the reference |
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