Exhibit 2

                          [LOGO OF TANNER & CO., INC.]


July 25, 2000

Board of Directors
Chemfab Corporation
701 Daniel Webster Highway
P.O. Box 1137
Merrimack, New Hampshire 03054

Gentlemen:

   Chemfab Corporation (the "Company"), Norton Company (the "Acquiror"), and
PPLC Acquisition Corp., an indirect wholly owned subsidiary of the Acquiror
(the "Acquisition Sub"), propose to enter into an agreement (the "Merger
Agreement") pursuant to which the Acquisition Sub will make a tender offer (the
"Offer") for all shares of the Company's common stock, par value $0.10 per
share (the "Shares"), at $18.25 per Share, net to the seller in cash. The
Merger Agreement also provides that, following a consummation of the Offer, the
Company will be merged with the Acquisition Sub in a transaction (the "Merger")
in which each remaining Share will be converted into the right to receive the
price paid per Share in the Offer in cash. In connection with the Merger
Agreement certain shareholders are entering into a Voting Agreement dated July
25, 2000 (the "Voting Agreement") pursuant to which those shareholders have
agreed to tender their Shares in the Offer and vote their Shares in favor of
the Merger and the Merger Agreement.

   You have asked us whether, in our opinion, the proposed cash consideration
to be received by the holders of the Shares in the Offer and the Merger, taken
as a whole, is fair to such stockholders from a financial point of view.

   In arriving at the opinion set forth below, we have among other things:

    (i) analyzed certain publicly available financial statements and other
        information of the Company;

    (ii) analyzed certain internal financial statements and other financial
         and operating data concerning the Company prepared by the
         management of the Company;

    (iii) analyzed certain financial projections prepared by the management
          of the Company;

    (iv) discussed the past and current operations and financial condition
         and the prospects of the Company with certain senior executives of
         the Company;

    (v) reviewed the reported prices and trading activity for the Shares;

    (vi) compared the financial performance of the Company and the prices
         and trading activity of the Shares with that of certain other
         comparable publicly trading companies and their securities;

    (vii) reviewed the financial terms, to the extent publicly available,
          of certain comparable transactions;

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    (viii) reviewed the Merger Agreement, the Voting Agreement and certain
           other related documents; and

    (ix) performed such other analyses as we deemed appropriate.

   We have assumed and relied upon, without independent verification, the
accuracy and completeness of the information reviewed by us for the purposes of
this opinion. With respect to the financial projections, we have assumed that
they have been reasonably prepared on bases reflecting the best currently
available estimates and judgments of the future financial performance of the
Company. We have not made any independent valuation or appraisal of the assets
or liabilities of the Company, nor have we been furnished with any such
appraisals. Our opinion is necessarily based on economic, market and other
conditions as in effect on, and the information made available to us, as of the
date hereof.

   We have acted as financial advisor to the Board of Directors of the Company
in connection with this transaction and will receive a fee for our services.

   It is understood that this letter is for the information of the Board of
Directors of the Company only and may not be used for any other purpose without
our prior written consent. This letter does not constitute a recommendation as
to whether or not any holder of Shares should tender such Shares in the Offer
or vote such Shares for the Merger, if applicable.

   Based on the foregoing, we are of the opinion on the date hereof that the
consideration to be received by the holders of Shares pursuant to the Merger
Agreement is fair from a financial point of view.

                                          Very truly yours.

                                          TANNER & CO., INC.

                                                     /s/ Harold Tanner
                                          By: _________________________________
                                                       Harold Tanner


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